Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| the relationship between cleavage and blastocoel formation in xenopus laevis. i. light microscopic observations. | 1971 | 5565077 | |
| the growth of the retina in xenopus laevis: an autoradiographic study. | 1971 | 5565078 | |
| yolk-platelet formation in oocytes of xenopus laevis (daudin). | 1971 | 5565402 | |
| a molecular approach to fertilization. ii. viability and artificial fertilization of xenopus laevis gemetes. | 1971 | 5567826 | |
| the distribution of melanosomes in larvae reared from normal and from pigmentless eggs of xenopus laevis. | 1971 | 5569240 | |
| an histochemical investigation of acid phosphatase activity in the pronephros of the developing xenopus laevis tadpole. | 1971 | 5571385 | |
| the effects of iproniazid upon brain size and larval behavior of developing xenopus laevis. | 1971 | 5571386 | |
| the post-metamorphic innervation by optic fibres of a virgin tectum in xenopus laevis. | 1971 | 5574836 | |
| fine structural changes in the differentiating epidermis of xenopus laevis embryos. | 1971 | 5575314 | |
| [increase in organizer cistrons for 5s rna and transfer rna in small xenopus laevis oocytes]. | 1971 | 4102791 | |
| the relationship between cleavage and blastocoel formation in xenopus laevis. ii. electron microscopic observations. | 1971 | 4105167 | |
| studies on xenopus laevis immunoglobulins. | 1971 | 4105472 | |
| [electron microscopic demonstration of mucoproteins in mesonephron bottle cells of the xenopus laevis daudin using phosphostungstic acid staining]. | 1971 | 4113742 | |
| stimulation of cell division in larval kidney (xenopus laevis) by rat kidney antiserum. | 1971 | 4250774 | |
| intracellular enzymes and -ketolic steroids of the gonads in xenopus laevis daud. | 1971 | 4400579 | |
| oxidative enzymes and -ketolic steroids in the interrenal cells of the south african clawed toad xenopus laevis daud. | 1971 | 4400580 | |
| the effect of acth and corticosteroids on carbohydrate metabolism during the metamorphosis of xenopus laevis. | 1971 | 4322553 | |
| the pharmacology of efferent synapses in the lateral-line system of xenopus laevis. | 1971 | 4326222 | |
| cytokinesis and cytochalasin-induced furrow regression in the first-cleavage zygote of xenopus laevis. | 1971 | 4329592 | |
| [sensitivity to tritox-30 (ddt, gamma-hch, dmdt) of tadpoles of xenopus laevis daudin and rana temporaria l]. | 1971 | 5316473 | |
| the effects of light and dark backgrounds upon indoleamine enzymes in developing xenopus laevis. | 1971 | 5317388 | |
| electron microscopic study on the xanthophore differentiation in xenopus laevis, with special reference to their pterinosomes. | 1972 | 4335114 | |
| hormonal regulation of the skin diffusional permeability to water during development and metamorphosis of xenopus laevis daudin. | 1972 | 4335780 | |
| long-term cell culture of two differentiated cell types from the liver of larval and adult xenopus laevis. | 1972 | 4336791 | |
| some pathological aspects of the spontaneous lymphoid tumour in xenopus laevis. | 1972 | 4337642 | |
| biogenesis of mitochondria during xenopus laevis development. | 1972 | 4337711 | |
| amino acid pools in developing oocytes of xenopus laevis. | 1972 | 4339521 | |
| development of the mauthner cell in xenopus laevis: a light and electron microscopic study of the perikaryon. | 1972 | 4339562 | |
| effect of cyclic amp and cytochalasin b on tissue cultured melanophores of xenopus laevis. | 1972 | 4344774 | |
| translation of encephalomyocarditis viral rna in oocytes of xenopus laevis. | rna from encephalomyocarditis virus was injected into oocytes of xenopus laevis. after incubation of the oocytes in [(35)s]methionine, polyacrylamide gel electrophoresis showed that a new series of polypeptides had been synthesized. they were identical in size to the polypeptides that appeared in ascites cells after infection with this virus. electrophoretic and chromatographic analysis of the methionine-containing tryptic peptides from three of the induced polypeptides confirmed that they were ... | 1972 | 4345506 |
| calf crystallin synthesis in frog cells: the translation of lens-cell 14s rna in oocytes. | 14s rna isolated from calf-lens polyribosomes was injected into oocytes of the frog xenopus laevis. oocytes injected with 14s rna and buffer contained a protein resembling the a2 chain of calf alpha-crystallin; oocytes injected with buffer alone contained no crystallin-like material. alphaa2 crystallin polypeptides were identified by various criteria: urea-gel electrophoresis under acidic and basic conditions, gel electrophoresis in sodium dodecyl sulfate, n-terminal analysis, and paper chromato ... | 1972 | 4504377 |
| [on the role of rna in gene amplification]. | a complex of ribosomal dna with rna has been isolated from ovaries of metamorphosing tadpoles of xenopus laevis. the complex is disrupted by treatments that destroy hydrogen bonds, and the sedimentation of the dna within the complex is sensitive to rnase. we suggest that the rna-ribosomal dna complex is an intermediate in the synthesis of amplified ribosomal dna and that the rna is a template. in addition, in a preliminary attempt to mimic the amplification process in vitro, we have demonstrated ... | 1972 | 4505650 |
| an rna-dna complex intermediate in ribosomal gene amplification. | an rna-ribosomal dna complex can be isolated from ovaries of xenopus laevis incubated in vitro during the amplification stage. a part of the rna present in the complex is resistent to rnase but becomes completely sensitive after heat denaturation, a treatment that also allows the separation of the rna from the dna. the size of the rna-ribosomal dna complex is strongly reduced after treatment with rnase. a small fraction of the rna present in the complex is complementary to the spacer region of t ... | 1972 | 4505651 |
| specification of positional information in retinal ganglion cells of xenopus: stability of the specified state. | in the normal development of retinotectal connections, the site in the tectum at which an optic fiber synapses is related to the position of its ganglion-cell body in the retina. how and when the ganglion cells acquire information about their positions is unknown, but the positional information that each ganglion cell will ultimately act upon is determined or specified at embryonic stages 28-32 in the clawed frog, xenopus laevis. here we report that once positional information has been so specif ... | 1972 | 4507610 |
| cytochemical localization of tyrosinase activity in pigmented epithelial cells of rana pipiens and xenopus laevis larvae. | 1972 | 4623762 | |
| [identification by immunofluorescence of thyrotropic and gonadotropic cells of the hypophysis of an anourous amphibian: xenopus laevis]. | 1972 | 4630082 | |
| [changes in various biochemical values in the blood and liver of xenopus laevis females treated with estrogens]. | 1972 | 4352832 | |
| collagen synthesis in xenopus oocytes after injection of nuclear rna of frog embryos. | a messenger rna fraction from polysomes of frog larvae or rna preparations from isolated nuclei of developing frog embryos were injected into growing xenopus laevis oocytes that were incubated with labeled proline. column chromatography of protein hydrolyzates revealed labeled hydroxyproline after injection of the messenger rna fraction and neurula nuclear rna, indicating that the injected material had promoted collagen synthesis. | 1972 | 4539141 |
| comparative study of the development of myosin specificity in two amphibian species (immunofluorescence-rana temporaria-xenopus laevis). | 1972 | 4552920 | |
| purification and properties of mitochondrial deoxyribonucleic acid dependent ribonucleic acid polymerase from ovaries of xenopus laevis. | 1972 | 4559794 | |
| immunological activity of transplanted spleens in xenopus laevis. | 1972 | 4561795 | |
| mitochondrial rna in xenopus laevis. i. the expression of the mitochondrial genome. | 1972 | 4564177 | |
| mitochondrial rna in xenopus laevis. ii. molecular weights and other physical properties of mitochondrial ribosomal and 4 s rna. | 1972 | 4564178 | |
| suppression of the allograft response by implants of mature lymphoid tissues in larval xenopus laevis. | 1972 | 4564971 | |
| fine structure of spermatogenesis in the south african clawed toad xenopus laevis daudin. | 1972 | 4636020 | |
| aspects of the ultrastructure of the alimentary canal and respiratory ducts in xenopus laevis larvae. | 1972 | 4638092 | |
| the reaction of the preoptic nucleus of xenopus laevis tadpoles to osmotic stimulation. a fluorescence microscopical investigation. | 1972 | 4638294 | |
| long term retention of colloidal thorium dioxide in the liver and spleen of xenopus laevis daudin. | 1972 | 4638907 | |
| analysis of histones from different tissues and embryos of xenopus laevis (daudin). i. technical problems in the purification of undegraded native total histone preparations. | 1972 | 4642119 | |
| amino acid uptake by xenopus laevis embryos: effect of triiodo-l-thyronine. | 1972 | 4642918 | |
| the role of water-regulating mechanisms in the development of the haploid syndrome in xenopus laevis. | 1972 | 4642996 | |
| [studies on the metabolism of steroid hormones in vertebrates. ix. the metabolism of (4- 14 c)testosterone in the liver of the african water frog (xenopus laevis)]. | 1972 | 4650172 | |
| [studies on metabolism of steroid hormones in vertebrates. x. metabolism of (4- 14c)estrone in liver slices of normal and of sex-converted african water frogs (xenopus laevis)]. | 1972 | 4650173 | |
| the effect of thyroxine and hypertonic environment on the enzymes of the urea cycle in xenopus laevis. | 1972 | 4653167 | |
| [biochemical research on oogenesis. 4. absence of amplification of 5 s rna and trna organizer genes in early xenopus laevis oocytes]. | 1972 | 4654399 | |
| the fine structure of the developing retina in xenopus laevis. | 1972 | 4655323 | |
| the number and activity of ribosomal rna genes in xenopus laevis embryos carrying partial deletions in both nucleolar organizers. | 1972 | 4666750 | |
| action of progesterone and related steroids on oocyte maturation in xenopus laevis. an in vitro study. | 1972 | 4670882 | |
| ribosomal rna synthesis in pre- and postgastrula embryos of xenopus laevis. | 1972 | 4670883 | |
| determination of the nucleoside triphosphate contents of eggs and oocytes of xenopus laevis. | the ribonucleotide and deoxyribonucleotide contents of eggs and oocytes of xenopus laevis were measured. eggs contained most deoxyribonucleotide in the form of triphosphates. dctp, dttp, datp and dgtp were present in similar amounts. the egg contained sufficient deoxynucleotide triphosphate to make approximately 2500 nuclei. oocytes contained less pyrimidine deoxyribonucleoside triphosphates than did eggs, and purine deoxyribonucleoside triphosphates were not detected. these differences may be c ... | 1972 | 4672799 |
| [determinism of polarity in xenopus laevis oocytes: a study with scanning and transmission electron microscopes]. | 1972 | 4674597 | |
| [biochemical research on oogenesis. v. comparison between somatic 5 s rna and oocyte 5 s rna in xenopus laevis]. | 1972 | 4676241 | |
| changes in the pigment pattern of eggs of xenopus laevis following fertilization. | 1972 | 4676895 | |
| duration of karyomitosis and cell division in cleavage divisions ii-iv in the clawed frog, xenopus laevis. | 1972 | 4677475 | |
| a chemical and pharmacological study on the role of catecholamines in the dispersion reaction of xenopus laevis. | 1972 | 4401401 | |
| possible involvement of - and -receptors in the natural colour change and the msh-induced dispersion in xenopus laevis in vivo. | 1972 | 4402096 | |
| substrate-dependent beta-hydroxy steroid dehydrogenase activity in the gonads of the clawed toad (xenopus laevis daud.). | 1972 | 4260704 | |
| characterization of yolk dna from xenopus laevis oocytes ovulated in vitro. | high molecular weight dna was isolated from the yolk platelets of xenopus laevis oocytes ovulated in vitro. yolk dna has the same buoyant density in cscl gradients as mitochondrial and nuclear dnas, and, like them, it is double-stranded. yolk dna behaves like nuclear dna, and not like mitochondrial dna, upon renaturation after denaturation. the molecules are always linear. cytochemical and biochemical controls preclude the possibility that the yolk dna might be contaminated by nuclear or mitocho ... | 1972 | 4113867 |
| response to skin allografts in xenopus laevis following thymectomy at early stages of lymphoid organ maturation. | 1972 | 4114967 | |
| chemoreception of the lateral-line organ of an aquatic amphibian, xenopus laevis. | 1972 | 4115218 | |
| some responses of the clawed toad, xenopus laevis, to soluble antigens administered in adjuvant. | 1972 | 4117179 | |
| oogenesis in xenopus laevis (daudin). i. stages of oocyte development in laboratory maintained animals. | 1972 | 4109871 | |
| evolution of the nucleoli during oogenesis in xenopus laevis studied by electron microscopy. | 1972 | 4111769 | |
| daily variation in mitotic rate in tail-fin epidermis of larval xenopus laevis and its modification by pineal organ-subcommissural organ system and photoperiods. | 1972 | 4113013 | |
| the timing of meiosis and dna synthesis during early oogenesis in the toad, xenopus laevis. | recently metamorphosed female xenopus laevis toads were injected with tritiated thymidine. animals were kept at 20 degrees c and were sacrificed 1-23 days after isotope injection. radio-autographs of squash preparations of the ovaries were made. the progress of labeled germ cell nuclei was followed to obtain information on the time course of early meiosis and extra-chromosomal dna synthesis. premeiotic s was estimated to take not more than 7 days. leptotene takes 4 days, zygotene takes 5 days, a ... | 1972 | 5009519 |
| [differentiation of tsh-cells in xenopus laevis under normal conditions and after thiouracil-treatment]. | 1972 | 5011146 | |
| the stabilizing action of prolactin on the lysosomes in tails from xenopus laevis daudin tadpoles. | 1972 | 5016216 | |
| ultrastructural features of neural induction in xenopus laevis. | 1972 | 5016948 | |
| a comparison of the ribosomal dna's of xenopus laevis and xenopus mulleri: the evolution of tandem genes. | 1972 | 5016971 | |
| the appearance, during development, of responses in the optic tectum following visual stimulation of the ipsilateral eye in xenopus laevis. | 1972 | 5021907 | |
| quantification of ultrastructural changes in the 'melanocyte-stimulating hormone cell' of the pars intermedia of the pituitary of xenopus laevis, produced by change of background colour. | 1972 | 5024057 | |
| specific cell sap requirement for peptide chain initiation in a cell-free system prepared from xenopus laevis liver. | 1972 | 5026317 | |
| [effects of hypophysectomy and thyroidectomy of larva of xenopus laevis d. on the development of intestinal epithelium]. | 1972 | 5026888 | |
| binocular interaction in the development of optokinetic reflexes in tadpoles of xenopus laevis. | 1972 | 5028235 | |
| the biosynthesis, intracellular transport, and packaging of melanocyte-stimulating peptides in the amphibian pars intermedia. | experiments in which glycine-(3)h has been introduced into excised neurointermediate lobes of xenopus laevis incubated in a modified krebs-ringer bicarbonate medium have shown that approximately 50% of the incorporated radioactivity is present in small peptides which have an electrophoretic mobility characteristic of the melanocyte-stimulating (msh) peptides shown to be elaborated within the tissue. based on these results and the demonstration that a discrete approximately 7 min pulse of the lab ... | 1972 | 5028257 |
| thin layer isoelectric focusing of the soluble lens extracts from larval stages and adult xenopus laevis. | 1972 | 5030595 | |
| an analysis of ribosomal protein during the development of xenopus laevis. | 1972 | 5033050 | |
| the growth of the retina in xenopus laevis: an autoradiographic study. ii. retinal growth in compound eyes. | 1972 | 5039211 | |
| oestrogen-stimulated lipid biosynthesis in xenopus laevis. | 1972 | 5039238 | |
| [evidence of deuterencephalic-spinocaudal induction activity in gastrula extracts of xenopus laevis after hydroxyapatite chromatography or electrofocusing]. | 1972 | 5040082 | |
| unusual yolk platelets in embryos of xenopus laevis (amphibia). | 1972 | 5042773 | |
| dna polymerase activity during maturation in xenopus laevis oocytes. | 1972 | 5043183 | |
| [biochemical studies on oogenesis. 1. intracellular rna distribution in small oocytes of xenopus laevis]. | 1972 | 5043320 | |
| [biochemical studies on oogenesis. 2. ribosome assembly during the development of oocytes in xenopus laevis]. | 1972 | 5043321 | |
| the effect of calcium on the potassium permeability in the myelinated nerve fibre of xenopus laevis. | 1972 | 5049418 | |
| intracellular calcium and cell cleavage in early embryos of xenopus laevis. | 1972 | 5063471 | |
| fine structural features of hind limb development in xenopus laevis. | 1972 | 5070820 | |
| karyotype analysis of xenopus muelleri (peters) and xenopus laevis (daudin), pipidae. | 1972 | 5072789 | |
| [influence of the optic nerve on the regeneration of the mesecephalon of xenopus laevis (daudin)]. | 1972 | 5073712 | |
| properties of the primary organization field in the embryo of xenopus laevis. i. autonomy of cell behaviour at the site of initial organizer formation. | 1972 | 5074314 |