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Binding sites on the antibody are complementary to specific binding sites on antigen.  Antibodies group together/in groups of 5 (pentamers) and attach to antigen presenting pathogens, forming antigen-anti...

The social and economic consequences for African Americans in Southern states after the conclusion of the American Civil War in 1865 were varied. On one hand, white plantation (and slave) owners lost thei...

Theory

Problems like this need to be broken down into steps: i) Factorise, ii) solve and iii) check. The aim of this question is to find values of ...

Given the prevailing reformation of the balance of power in Europe due to the rise of nationalism and the ongoing Spanish Civil War from 1936-1939 which reflected a microcosm of interwar Europe, the Great...

Negative is a slightly confusing term, as it seems to imply that the control is bad, when in reality it is vital to being alive! Negative in this sense is used in a mathematical way, meaning "removin...