| classic pages in obstetrics and gynecology. the effects of progesterone and related compounds on ovulation and early development in the rabbit: gregory pincus and min chuch chang. in: acta physiologica latinoamericana, vol. 3, pp. 177-83, 1953. | | 1978 | 356614 |
| development of the oral contraceptives. | | 1978 | 356615 |
| enterotoxigenic intestinal bacteria in tropical sprue. ii. effect of the bacteria and their enterotoxins on intestinal structure. | | 1975 | 1091526 |
| pesticide exposure among migrant workers in southern new jersey. | | 1975 | 1170906 |
| [human exposure to animal rabies in puerto rico, 1980-1983]. | | 1985 | 3864449 |
| studies with the schistosomicide oxamniquine (uk-4271). ii. activity in primates. | | 1973 | 4205106 |
| mites of the family listrophoridae in puerto rico. | | 1970 | 5415458 |
| colonization and life cycle of amblyomma variegatum (acari: ixodidae) in the laboratory in puerto rico. | | 1984 | 6694178 |
| fascioliasis in puerto rico: a review. | | 1981 | 6944073 |
| antigenic analysis of giardia lamblia from afghanistan, puerto rico, ecuador, and oregon. | the trophozoite antigens of giardia lamblia to which host humoral and cellular immune responses are directed have not been identified. therefore, we initiated studies to characterize these antigens in strains of g. lamblia from afghanistan, oregon, ecuador, and puerto rico. by polyacrylamide gel electrophoresis, the electrophoretic mobility patterns of proteins of the four strains were similar; molecular weights of protein bands ranged between 12,000 and 140,000. the antigens which reacted with ... | 1982 | 7085076 |
| parasitological and pathological findings in capuchin monkeys infected with schistosoma japonicum or schistosoma mansoni. | capuchin monkeys were studied for 7 months after exposure to schistosoma mansoni or to either a japanese or a philippine strain of schistosoma japonicum. the number of eggs present in the tissues and passed in the feces of s. mansoni-infected monkeys correlated well with the number of worm pairs recovered. monkeys infected with the philippine strain of s. japonicum passed large numbers of eggs in the feces and the number of these eggs correlated well with the number of worm pairs present. in mon ... | 1982 | 7125064 |
| studies on host-parasite relationship between the puerto rican strain of schistosoma mansoni and biomphalaria snails. | immunoelectrophoretic studies on common antigenicities were carried out by using rabbits sera immunized with the puerto rican strain of schistosoma mansoni adult worms or eggs and antigens of several adult biomphalaria snails and vice versa. as the result, s. mansoni adult worm extracts produced 8 bands both with extracts of biomphalaria glabrata pigmentation and b. glabrata pigmentado, 3 to 4 bands with those of b. glabrata albino and 1 to 2 bands with those of b. straminea. on the other hand, ... | 1994 | 7777917 |
| frequency of rubella antibody among pregnant women and other human and animal populations. a report from the collaborative study of cerebral palsy. | | 1964 | 14117317 |