Three main pathways of CD8+ regulatory T cells:

a. APC lysis

b. Inhibition of APC function

c. Regulation of effector T cells

TLS Online TPP Program

#Id: 9951

#Unit 4. Cell Communication and Cell Signaling

Natural immunity to helminth infections is Th2-type responses, including ILC2s, and IL-4 and IgE production.

TLS Online TPP Program

#Id: 1968

#Unit 10. Ecological Principles

Survivorship (lx) is calculated by dividing the number of individuals in an age class by the number in the original cohort;

TLS Online TPP Program

#Id: 4678

#Unit 13. Methods in Biology

Enzyme-linked immunosorbent assay, commonly known as ELISA (or EIA), is similar in principle to RIA but depends on an enzyme rather than a radioactive label. 

TLS Online TPP Program

#Id: 2367

#Unit 5. Developmental Biology

Zeta neoblasts give rise to epidermal cell fates through a prog-1-positive postmitotic precursor state.

TLS Online TPP Program

#Id: 1583

#Unit 5. Developmental Biology

Primitive Streak

The first morphological sign of gastrulation in amniotes