<span>Plasma cells, they are also called plasma B cells, or effector B cells, are white blood cells that secrete large volumes of antibodies. They are transported by the blood plasma and the lymphatic system. Plasma cells originate in the bone marrow; B cells differentiate into plasma cells that produce antibody molecules closely modeled after the receptors of the precursor B cell. Once released into the blood and lymph,</span>
Hii...so the answer is
The four layers are the external oblique, internal oblique, transverse abdominals.
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The answer is
D. Repeated trials
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A chromatid has something to do with chromosome
