Word: ovum
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Other researchers had already transplanted the fecund rabbit's ova. But cows usually produce only one ovum at a time. Umbaugh perfected a process of "super-ovulation"-injecting the cows with a pituitary extract which causes them to produce an average...
...film is an animated cartoon done by two ex-Disney artists-with no Disney gags. It explains the processes of sex and pregnancy with simplified diagrams and a minimum of anatomical detail (at first the tails of spermatozoa were shown wiggling in their movements to reach and fertilize the ovum, but technical advisers feared that schoolkids might associate the wiggling with human swimming, break into nervous laughter...
Every human being is constantly subjected to bombardment by gamma rays (X rays) from natural sources such as cosmic rays. These do no visible damage, for the body is accustomed to the low normal "level of radiation." But when a gamma ray hits the nucleus of a spermatozoon or ovum (the reproductive cells which unite to form a new individual), it may damage one of the thousands of "genes" which carry hereditary characteristics from one generation to the next. This may produce a "mutation." The child may differ slightly or radically from its parents, or the difference may lie concealed...
...this mere scientific doodling? The experimenters hoped it might answer an-important genetic question: just how much does a mother-or even a foster mother-influence the fertilized ovum developing in her womb...
...female rabbit's uterus and she bore normal, healthy bunnies.* Other investigators have nursed a monkey's egg, fertilized in its mother's body, to the eight-cell stage in glass. Six years ago Philadelphia's Cancer Specialist Stanley Philip Reimann, by pricking a human ovum with a glass needle, succeeded in stimulating it to an apparent beginning of growth...