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water-proof, waxy suberin-thickened layer on the radial and transverse cell walls of the endodermis.
an organelle that occurs in the cytoplasm of both plant and animal cells. It is made from stacks...
a state in which the body temperature has dropped to dangerously low levels.
structure in animal cells thought to form the spindle fibres during cell division.
the inner body tissue layer that forms the gut and other internal organs.