Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| growth and differentiation during metamorphosis of xenopus laevis. | 1973 | 4750377 | |
| 5 s dnas of xenopus laevis and xenopus mulleri: evolution of a gene family. | 1973 | 4754843 | |
| absence of cell mobility across the retina in xenopus laevis embryos. | 1973 | 4759113 | |
| reiterated transfer rna genes of xenopus laevis. | 1973 | 4760135 | |
| clustering of transfer rna genes of xenopus laevis. | 1973 | 4760136 | |
| histological development of the cement gland in xenopus laevis: a light microscopic study. | 1973 | 4760636 | |
| control of 5s rna synthesis during early development of anucleolate and partial nucleolate mutants of xenopus laevis. | ribosomes of all eukaryotes contain a single molecule of 5s, 18s, and 28s rna. in the frog xenopus laevis the genes which code for 18s and 28s rna are located in the nucleolar organizer, but these genes are not linked to the 5s rna genes. therefore the synthesis of the three ribosomal rnas provides a model system for studying interchromosomal aspects of gene regulation. in order to determine if the synthesis of the three ribosomal rnas are interdependent, the relative rate of 5s rna synthesis wa ... | 1973 | 4761330 |
| the development of a hypothalamic monoaminergic system for the regulation of the pars intermedia activity in xenopus laevis. | 1973 | 4761512 | |
| properties of the primary organization field in the embryo of xenopus laevis. v. regulation after removal of the head organizer, in normal early gastrulae and in those already possessing a second implanted organizer. | 1973 | 4761667 | |
| effects of adenohypophysectomy and aminoglutethimide on water and electrolyte composition of xenopus laevis daudin. | 1973 | 4761690 | |
| an electron microscope study of acid hydrolase activity in the pneumonocytes of xenopus laevis. | 1973 | 4762899 | |
| preferential transcription of xenopus laevis ribosomal rna in interspecies hybrids between xenopus laevis and xenopus mulleri. | 1973 | 4763983 | |
| ionic currents at resting potential in nerve fibres from xenopus laevis. potential clamp experiments. | 1973 | 4765596 | |
| the effect of long-term exposure to an illuminated white background on the msh content of the pituitary of xenopus laevis. | 1973 | 4770273 | |
| mycobacteria and lymphoreticular tumours in xenopus laevis, the south african clawed toad. i. isolation, characterization and pathogenicity for xenopus of m. marinum isolated from lymphoreticular tumour cells. | 1973 | 4770465 | |
| mycobacteria and lymphoreticular tumours in xenopus laevis, the south african clawed toad. ii. have mycobacteria a role in tumour initiation and development? | 1973 | 4770466 | |
| sequence organization in the genome of xenopus laevis. | 1973 | 4782889 | |
| isolation and structure of a new active peptide "xenopsin" on the smooth muscle, especially on a strip of fundus from a rat stomach, from the skin of xenopus laevis. | 1973 | 4783175 | |
| [biochemical research on cogenesis. 6. properties of 5s rna present in the different cellular compartments of xenopus laevis oocytes]. | 1973 | 4785224 | |
| the action of cytochalasin b during egg cleavage in xenopus laevis: dependence on cell membrane permeability. | 1973 | 4787185 | |
| quantitative and qualitative analysis of rna synthesis in stage 6 and stage 4 oocytes of xenopus laevis. | 1973 | 4787598 | |
| synthesis of mitochondrial rna in disaggregated embryos of xenopus laevis. | 1973 | 4789599 | |
| the development of the optic tectum in xenopus laevis: a golgi study. | 1973 | 4791391 | |
| analysis of histones from different tissues and embryos of xenopus laevis (daudin). ii. qualitative and quantitative aspects of nuclear histones during early stages of development. | 1973 | 4792195 | |
| a study of the dissociation of the ribosomes of xenopus laevis at various stages of development. | 1973 | 4797001 | |
| [biochemical research on oogenesis. 7. synthesis and maturation of 5s rna in the small oocytes of xenopus laevis]. | 1973 | 4799005 | |
| progesterone induced maturation in oocytes of xenopus laevis. appearance of a 'maturation promoting factor' in enucleated oocytes. | 1973 | 4799790 | |
| oestrogen-stimulated cholesterol and lipid synthesis in xenopus laevis liver. | 1973 | 4802550 | |
| 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 | |
| properties of the primary organization field in the embryo of xenopus laevis. ii. positional information for axial organization in embryos with two head organizers. | 1972 | 5074320 | |
| properties of the primary organization field in the embryo of xenopus laevis. 3. retention of polarity in cell groups excised from the region of the early organizer. | 1972 | 5074321 | |
| [changes of electrolyte content in amphibian tissues during larval development, metamorphosis and regeneration (xenopus laevis daudin and triturus cristatus carnifex)]. | 1972 | 5074322 | |
| the development of the tectum in xenopus laevis: an autoradiographic study. | 1972 | 5074324 | |
| the effect of actinomycin d on developing pigment cells of xenopus laevis. | 1972 | 5075789 | |
| the effect of ribosomal protein exchange on the activity of xenopus laevis ribosomes. | 1972 | 5077849 | |
| correlation between ultrastructural aspect of nucleoli and inhibition of ribosomal rna synthesis in xenopus laevis oocytes. | 1972 | 5080792 | |
| [ultrastructure and iodine uptake of the thyroid gland in larvae of xenopus laevis daud]. | 1972 | 5081865 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| [changes in various biochemical values in the blood and liver of xenopus laevis females treated with estrogens]. | 1972 | 4352832 | |
| 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 |