Word: colostrum
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Dates: during 1990-1999
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...cows were cloned using residual mammary cells found in the yellowish foremilk, or colostrum, produced when a cow gives birth. Scientists from Tokyo-based Snow Brand Milk Products gathered up some of these cells and gave them the Dolly-the-sheep treatment: transplanting their DNA into hollowed-out eggs and inserting the resulting embryos into the wombs of surrogate cows. Mammary cells were also used to produce Dolly, but they were scraped from the udder of an adult sheep. The Japanese scientists believe their kinder, gentler technique will make it easier to clone high-milk-yielding "supercows" by reducing...