Tight junctions between adjacent Sertoli cells near the basal lamina form a blood–testis barrier

TLS Online TPP Program

#Id: 7248

#Unit 5. Developmental Biology

T2 cells also express BAFF-R, the receptor for the B-cell survival factor BAFF, whose expression is dependent on signals received through the BCR. 

As B cells differentiate from the transitional T2 state to full maturity, they raise their levels of mIgD still further, while reducing the expression of mIgM. They also cease to express CD24 and CD93.

TLS Online TPP Program

#Id: 6580

#Unit 7. System Physiology – Animal

The walls of the seminiferous tubules are lined by primitive germ cells and Sertoli cells, large, complex glycogen- containing cells that stretch from the basal lamina of the tubule to the lumen

TLS Online TPP Program

#Id: 1865

#Unit 10. Ecological Principles

Interference competition- Individuals interact directly with one another by physical force or intimidation.

TLS Online TPP Program

#Id: 8278

#Unit 1. Molecules and their Interaction Relevant to Biology

Plot of density versus temperature for liquid water.

The maximum density of water is reached at 4°C.

The density of ice at 0°C is 0.9167 g cm-3•

TLS Online TPP Program

#Id: 4500

#Unit 13. Methods in Biology

Three unipolar limb leads (Augmented limb leads):

VR (right arm), VL (left arm) and VF (left foot).