Examlex
In an experiment to test the effects of a new flu drug, two groups are used. One group is given the drug, the other group is given a placebo. The group that receives the placebo is called the __________ group.
Nucleus
The central and most important part of an atom, cell, or molecule, containing protons and neutrons in the case of an atom, and genetic material in the case of a cell.
Labeled Structure
An anatomical or architectural feature that has been identified and named.
Sarcomere
A sarcomere is the functional unit of a muscle fiber, comprising the filaments actin and myosin, responsible for muscle contraction.
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