Positive Costimulatory Receptors: ICOS

ICOS binds to another member of the growing B7 family, ICOS-ligand (ICOS-L), which is also expressed on a subset of activated APCs.

ICOS plays a key role in maintaining the activity of already differentiated effector and memory T cells.

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#Id: 4828

#Unit 13. Methods in Biology

Type I and Type II errors are subjected to the result of the null hypothesis.

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#Id: 6447

#Unit 8. Inheritance Biology

Suppose recombination frequency is 0.1, and that the probability of obtaining the same observations under the assumption of independent assortment is 0.0001. 

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#Id: 8604

#Unit 2. Cellular Organization

G1/S Cyclin–CDKs

In human - cyclin E-CDK 2 

In budding yeast - CIn 1/2-Cdc 28

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#Id: 8483

#Unit 1. Molecules and their Interaction Relevant to Biology

The central bond in this case is the peptide bond, where rotation is constrained. The peptide bond is normally (99.6% of the time) in the trans configuration, constraining  to a value of w=+_180. For a rare cis peptide bond, w=0.

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#Id: 5318

#Unit 7. System Physiology – Animal

Reduced Ventricular

Ejection Ventricular pressure falls because the ventricles are no longer contracting.