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a cytoplasmic vacuole (lysosome) containing accumulated particulate products of metabolism, for example, lipofuscin.
remaining or left behind.
an amorphous body formed by the separation of the original tail of the spermatid during its metamorphosis to spermatozoon.
insecticide spray for surfaces. Has a residual effect either because of the ingredient or the vehicle. Aimed at killing the larvae that are still to hatch.
urine remaining in the bladder after voiding; seen with bladder outlet obstruction and disorders affecting nerves controlling bladder function.