Animal cells lose their totipotency at an early stage in embryonic development.    From Wordnet, Princeton University. 

The early embryo retains its totipotency, he concluded.    From Wordnik.com.  [Epigenesis and Preformationism] Reference

T-cell telomere therapeutic cloning therapeutic virus totipotency toxic waste transgenic species transposon.    From Wordnik.com.  [21. Life Sciences] Reference

At this stage the cells are just at the very beginning of cellular differentiation and are said to be totipotent (See totipotency).    From Wordnik.com.  [blastula] Reference

Even today in various quarters, the discussions continue, with new embryological details like twinning and chimerization impinging upon the debate, and new conceptual questions arising from the intricate biology surrounding totipotency and pluripotency.    From Wordnik.com.  [Do Embryos Have Souls?] Reference

What factors can affect a cell when it loses its totipotency (when its fate becomes determined)?.    From Wordnik.com.  [Yahoo! Answers: Latest Questions] Reference

The first week of human pre-embryo development is characterized by the induction of totipotency and then pluripotency.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

(See totipotency.) 1.    From Wordnik.com.  [Dolly] Reference

totipotency.    From Wordnik.com.  [totipotency] Reference

2002. totipotency.    From Wordnik.com.  [totipotency] Reference