Adenoviruses and cytomegalo virus use to reduce the surface expression of class I MHC molecules, 

Measles virus and HIV, reduce levels of class II MHC molecules on the surface, 

Vaccinia virus, secreting a protein that binds to the C4b complement component.

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#Id: 7256

#Unit 5. Developmental Biology

B-10 B cells release the interleukin IL-10 upon antigenic stimulation, and may serve to reduce inflammation during an ongoing immune response.

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#Id: 9600

#Unit 11. Evolution and Behavior

Modern humans and Neanderthals show an average cranial capacity of around 1400–1500 cc. 

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#Id: 9144

#Unit 10. Ecological Principles

Rp > 1 disease is to spread

Rp = 1 disease is constant

Rp < 1, disease dies out

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#Id: 2487

#Unit 13. Methods in Biology

Acrylamide gels can be made with a content of between 3% and 30% acrylamide Low concentration are used to where free movement of the proteins is required without any noticeable frictional effect such as flat-bed isoelectric focusing or the stacking gel system of an SDS–polyacrylamide gel.

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#Id: 3179

#Unit 3. Fundamental Processes

Replication of mtDNA may be stochastic because there is no control over which particular copies are replicated, so that in any cycle some mtDNA molecules may replicate more times than others.