Fill in the blanks in the following paragraph using words from the word bank bel
ID: 264695 • Letter: F
Question
Fill in the blanks in the following paragraph using words from the word bank below. Not all words will be used, and some may be used more than once.
Like T cells, B cells require multiple signals for activation. Antigen binding to the B cell antigen__________provides one signal, while antigen-specific effector_______________provide the other signals. The requirement for multiple signals to activate either a T cell or a B cell helps to prevent_______________ and dangerous activation of________________ , including___________ __________. Most of the proteins involved in cell–cell recognition and antigen recognition in the immune system, including____________, TCRs, and __________________ proteins, as well as various co-receptors, belong to the ancient Ig superfamily. This superfamily is thought to have evolved from a primordial gene encoding a single Ig- like____________. The mechanisms for diversifying antibodies and T cell receptors by recombining gene segments may have arisen when a __________inserted into an exon of a gene encoding an Ig family member. receptors (BCRs) helper T cells killer T cells inappropriate appropriate monocytes lymphocytes self-reactive non-self-reactive antibodies IPR MHC domain transposon retrovirus
Explanation / Answer
Fill in the blanks in the following paragraph using words from the word bank bel
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