Once stem cells become positioned farther from the niche, signaling factors cannot reach them, and differentiation commences.

TLS Online TPP Program

#Id: 2782

#Unit 13. Methods in Biology

The retention time tR for each analyte has two components

 i - dead time, tM. &

ii - adjusted retention time, t’R.

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#Id: 95

#Unit 5. Developmental Biology

Cytoplasmic Determinants

Blastomeres of the early embryo are apportioned a set of critical determination factors within the egg cytoplasm that determine cell fate

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#Id: 8350

#Unit 2. Cellular Organization

One NPF is called WASp, as it is defective in patients with Wiskott-Aldrich syndrome.

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#Id: 8799

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 4764

#Unit 5. Developmental Biology

In the germ line, PAL-1 synthesis is prevented by the PUF-8 protein, which binds to the 3′ UTR of pal-1 mRNA and blocks its translation.