If a stem cell divides asymmetrically, produce two types of cells (a stem cell & a developmentally committed cell) are produced at each division, is called the single stem cell asymmetry.

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#Id: 1644

#Unit 4. Cell Communication and Cell Signaling

Inhibition of class I presentation observed when protein synthesis was blocked by the inhibitor emetine.

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#Id: 7610

#Unit 5. Developmental Biology

Cortical granule proteases is ovastacin When ZP2 is cleaved by ovastacin, it loses its ability to bind sperm

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#Id: 1764

#Unit 4. Cell Communication and Cell Signaling

Self antigens are not uncommon in the periphery, Two factors contribute to this:                                                                                                                             a. not all self a. antigens are expressed in the central lymphoid organs where negative selection occurs

b. there is a threshold requirement for affinity to self antigens before clonal deletion is triggered, allowing some weakly self-reactive clones to survive the weeding-out process.

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#Id: 5715

#Unit 7. System Physiology – Animal

Before puberty, Growth hormone excess causes gigantism

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#Id: 8025

#Unit 1. Molecules and their Interaction Relevant to Biology