Word: amnion
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
...progress reports: ¶ Harvard's Dr. John F. Enders (Nobel prizeman because his test-tube foundations made the Salk vaccine possible) and Dr. Samuel L. Katz have worked along orthodox lines, weakened the measles virus by growing it 70 times in tissue cultures of human kidney and amnion, and finally chick embryo cells. Despite this "attenuation," it has retained its power to stimulate the system to produce antibodies against itself-just as does an attack of the natural disease, which confers lifelong immunity. Some children who got this vaccine developed a slight rash and low fever, but no severe...
...Poliomyelitis viruses for vaccine production can be grown in human afterbirth, which may replace monkey kidneys as the basis of production-line tissue cultures, suggested three University of California researchers. Cells from the inner layer (amnion) of the placenta grow at about the same rate as monkey kidney cells and in the same chemical food baths, reported Elsa M. Zitcer and colleagues. Advantages: less danger of sensitization, and freer supply of placentas, since India is sensitive about continued export of the revered monkeys...
Both male & female babies slough off many different types of cells into the amnion ("bag of waters") in which they are carried. After the seventh month, a girl baby sloughs off distinctive cells like those from the genitalia of an adult woman. By puncturing the bag of waters late in pregnancy, draining off a little fluid, and staining the cells, the sex of 25 babies was foretold with accuracy at the University of Brussels' Laboratory for Experimental Gynecology...