3H thymidine uptake assays were the first to be used routinely to measure cell division in lymphocyte cultures.

TLS Online TPP Program

#Id: 9446

#Unit 4. Cell Communication and Cell Signaling

The cytokines form a family of relatively small, secreted signaling molecules:

Contain about 160–200 AA

4 long, conserved α helices

Control growth and differentiation

TLS Online TPP Program

#Id: 7223

#Unit 5. Developmental Biology

Thymic selection The most distinctive property of the mature T cells is that they recognize only foreign antigen combined with self-MHC molecules.

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#Id: 458

#Unit 2. Cellular Organization

Bromodomains recognize acetylated lysine.

TLS Online TPP Program

#Id: 6425

#Unit 8. Inheritance Biology

X-Linked Dominant Traits

X-linked dominant traits affect both males and females. 

Although they often appear more frequently in females than in males.

Affected males must have affected mothers (unless the males possess a new mutation), and they pass the trait to all their daughters.

Affected daughters must have either an affected mother or an affected father.

X-linked dominant traits do not skip generations.

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#Id: 4834

#Unit 13. Methods in Biology

A type I error is often called a false positive (an event that shows that a given condition is present when it is absent).