C5b6789 is the membrane attack complex when complement is activated

Multiple choice: Epithelial surfaces provide the first line of defense against infection by the use of several types of mechanisms. One of the chemical mechanisms used by epithelia is

A transplant patient began to show signs of rejection 8 days after receipt of a transplanted organ. What immune elements might be found in the rejected organ?

In patients with lymphomas, the cancer cells invade the bone marrow and destroy the environment required for normal hematopoiesis. This leads to bone marrow failure, which disrupts the production of hematopoietic cell lineages. All of the following cell types would be affected by this EXCEPT

The father of Immunology is known as:

Several subsets of innate lymphoid cells (ILCs) have been identified that share their patterns of cytokine production with the known subsets of T cells. The combined activity of related ILC and T cell subsets is effective in eradicating pathogenic infections because:

The first and most important barrier for keeping pathogens out of the human body is:

A somatic cell in a sexually-reproducing organism has 6 chromosomes. How many total sister chromatids are present within this cell at the end of G2 phase?

Optional up to 2 points of extra credit: The agar deeps below were inoculated with unknown strains of bacteria which were added to agar that had been cooled to just above turning solid, mixed, and then poured into the test tubes. Following incubation, growth was observed as shown. Please match the label of each tube (i.e., A, B, C, D, or E) with the type of growth observed in the tube.

Jimmy comes into your lab to complete a VO2max test on a treadmill. During a 5 minute warm-up, his oxygen consumption plateaus and his RER is 0.73. How could you interpret this RER value? (select all that apply)