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Where does stem cells come from?

2007-03-14 14:07:41 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science

2 answers

When an egg is fertilized, it divides, making hundreds of cells in a ball called a blastocyst. The blastocyst is just a membrane surrounding a mass of stem cells. Each one of the hundreds of stem cells could become a child and can be separated to make multiple copies, or clones of the offspring.

2007-03-14 15:47:00 · answer #1 · answered by andrea_bocelli_fan1 3 · 0⤊ 0⤋

When an egg splits, after it has split a few times, it's considered a stem cell

2007-03-14 21:15:55 · answer #2 · answered by MLBfreek35 5 · 0⤊ 0⤋