Dolly was the only lamb born from 277 fusions of oocytes with
udder cells.
A key difference, however, is that Dolly's donor cell came from adult
udder cells growing in lab dishes (see ScienceNOW, 24 February), while the donor cells used to create the monkey clones came from early embryos.
In addition, Dolly's DNA may have come from a stem cell that had not yet matured into
an udder cell.
Not exact matches
She began life as a single
cell taken from the
udder of her mother.
The difference with Dolly is that all her DNA originated in a
cell from the
udder of an adult sheep.
She is not the result of mating between a ewe and a ram but was cloned from a single
cell taken from the
udder of a six - year - old ewe.
Milk straight from the
udder, the «stem
cell» of foods, was used as medicine to treat, and frequently cure some serious chronic diseases.