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If someone wanted to develop a “drug” that inhibited all of the complement pathways, which “target” molecule would make sense? (what molecule would you try to block in order to inhibit all of the complement cascades)

An immunologic technique where a cell sample is incubated with fluorescently labeled antibodies and these samples are then run through a machine containing lasers and detectors that can measure cell populations and their phenotypes (like whether the cells are angry or dividing, etc):

Identify/List one TH1 associated cytokine and one TH2 associated cytokine.

IL-2 is produced by one cell and the same IL-2 stimulates that same cell. This type of cytokine activity is called:

Properdin functions to stabilize C3 molecules in which of the complement pathways?

Enzyme linked immunosorbant assays (ELISAs) can use antibodies specific to a certain molecule and a standard curve of known concentrations of that molecule to enable the measurement of the concentration of that molecule in a bodily fluid. For example, an ELISA could be used to measure IL-6 levels in plasma. 

If somehow, in spite of several different regulatory steps, your body produced a Bcell/plasma cell that produced autoreactive IgM antibodies to an epitope in your liver; which complement pathway would be responsible for potential liver tissue damage?

Which molecules are found in all three pathways?

Which immunoglobulin causes allergic reactions due to release of histamine from mast cells?

T helper cells recognize which of the following?