Indirect immunofluorescence microscopy uses an unlabeled primary antibody, followed by a fluorescently labeled 

TLS Online TPP Program

#Question id: 430

#Unit 1. Molecules and their Interaction Relevant to Biology

The reactions that digest foods in the mouth, stomach and intestine are classified as reactions.

TLS Online TPP Program

#Question id: 12226

#Unit 10. Ecological Principles

Which  of  the  following  types  of  species interaction is  correctly paired with  its  effects  on  the  density  of  the  two interacting populations?

TLS Online TPP Program

#Question id: 1274

#Unit 4. Cell Communication and Cell Signaling

Which of the following are included as functions of the extracellular matrix?

a. supporting differentiation               b. synthesis of procollagen

c. binding growth hormones               d. filtering

TLS Online TPP Program

#Question id: 4976

#Unit 11. Evolution and Behavior

Which of these is the most likely explanation for the existence of dicynodont fossils on modern-day Antarctica?

TLS Online TPP Program

#Question id: 16955

#Unit 4. Cell Communication and Cell Signaling

Stage thymocytes express neither CD4 nor CD8, markers associated with mature T cells. They are therefore called double negative (DN) cells. DN cells first travel to the region under the thymic capsule, a region referred to as the ________, where they proliferate and begin to generate their T-cell receptors. Thymocytes that successfully express TCRs begin to express both CD4 and CD8, becoming double positive (DP) cells, and populate the cortex, the site where most (85% or more) immature T cells are found.