31.   However the NIH report concluded that, for some purposes, the embryonic cells are clearly superior.

32.   If human embryonic cells can be converted into myelin-making cells the same way, the method could eventually help treat human neurological disorders, the authors say.

33.   If it was possible to clone using an already differentiated embryonic cell, it was time to take another look at cloning an adult, Wilmut decided.

34.   In August, University of Wisconsin researchers reported that human embryonic cells could be converted into blood-forming cells.

35.   In support of its claim, Advanced Cell Technology supplied a patent application and a photograph taken of its embryonic cells under a microscope.

36.   In such fertilization efforts, clusters of embryonic cells normally are produced in a laboratory dish.

37.   In the womb, the embryonic cells develop naturally into the highly organized set of tissues that constitute a living infant.

38.   It is almost certainly a program, not a description, a series of steps that directs a handful of embryonic cells into progressively more specialised tissues.

39.   One is the cytoskeleton or scaffolding that gives internal shape to embryonic cells.

40.   One idea is to repress the genes that make embryonic cells appear foreign to their host.