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While limiting the expression of MHC class II to so-called "professional" APCs partially ameliorates the problem of self non self recognition among CD4+ T cells, it remains difficult to understand how it is possible that even these cells' class II molecules are not deluged with processed "self" molecules (for example, albumin is present at extremely high quantities in the serum, so one might imagine that peptides from this alone would suffice to compete for any transiently present non-self proteins). What is/are the mechanisms that would afford enhanced processing or recognition of potentially dangerous molecules?
liquid portion of blood is known as ______. Most of the plasma comprises of ______ that serves as a solvent and carries heat. ______ like sodium, potassium and ______ serve to manage the osmotic balance in the blood.
The key difference between the larger or "regular" moons and the smaller or "irregular" moons of the Jovian planets is that.
Darwin identified "Natural Selection" as the primary mechanism for evolution. What exactly is being selected for by Nature? How does environment affect natural selection over time? Include a specific example of natural selection to illustrate your..
1. Compare and contrast the toxicokinetics of AsV and arsenobetaine. Consider each of the four components of toxicokinetics (i.e. Absorption, Distribution, Metabolism, and Elimination
Charles Darwin did not “invent” the idea of evolution. Instead he developed a crucial concept to explain a serious issue with the theory of evolution. Select a scientist who played a similar crucial role in the development of heliocentrism or the ..
create a 4- to 6-page public service brochure with appropriate images to be printed in the sunday edition of your
Codons in our mRNA molecules are said to“specify” or “encode” particular aminoacids. How, exactly, do they do that? For example, UCU encodes theamino acid serine—why doesn’t UCU encode some otheramino acids?
Diagram how biodiesel is produced from lipid sources including oilseeds and engineered cyanobacteria.
What differences in the antibodies produced following immunization with the inactivated virus contained int he " Flu Shot" vs. the attenuated virus contained in the " flu mist" vaccines do you expect? Which would you recommend for individuals who ..
An analysis of a lipid shows that it is made up of two fatty acids and a phosphate group, each bonded to a glycerol molecule. The molecule has a hydrophobic end and a hydrophilic end. Based on this information, what conclusion can you draw regardi..
Which of the following is NOT part of the extracellular matrix?
Arrange the amino acid substitutions in increasing order of conservatism and amino acids are given using one letter codes to give you some practice in using those.
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