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Sertoli cells in the testes secrete testosterone.
Blood Type
A system for identifying blood types through the detection or nondetection of inherited antigens on the surfaces of red blood cells.
Association
A statistical relationship between two or more variables, indicating how changes in one variable are connected with changes in another.
Sample Data
A subset of a population selected for measurement, observation, or questioning, to provide statistical information about the population.
Null Hypothesis
A statement that assumes no significant difference or effect exists in a set of observations, serving as the default assumption in hypothesis testing.
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