Biology Question:
When the concentration of molecules on both sides of a membrane is the SAME, the solution moves from an area of higher concentration to an area of lower concentration.

True or False?

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.