T1 cells are mIgMhi, mIgD -/lo, CD21-, CD23-, CD24+, and CD93+.  T2 cells differ from T1 cells in having higher levels of mIgD and in expressing CD21 and CD23.

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#Id: 8883

#Unit 2. Cellular Organization

Once mitotic CDKs are activated at the end of G2 , they phosphorylate specific serine residues in all 3 nuclear lamins.

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#Id: 2137

#Unit 8. Inheritance Biology

This suppression of recombination allows alleles adapted to a specific environment to remain together, unshuffled by recombination

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#Id: 327

#Unit 1. Molecules and their Interaction Relevant to Biology

Hexokinase IV is subject to inhibition by the reversible binding of a regulatory protein specific to liver

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#Id: 7599

#Unit 5. Developmental Biology

The human zona pellucida has four major glycoproteins— ZP1, ZP2, ZP3, and ZP4

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#Id: 5058

#Unit 3. Fundamental Processes

Each DnaB–DnaC complex consists of six DnaC monomers bound to a hexamer of DnaB.

Note that the DnaB helicase cannot open double-stranded DNA; it can only unwind DNA that has already been opened, in this case by DnaA.

DnaB binding to single-stranded DNA is the signal to hydrolyze ATP and for release of DnaC.