The transplant of pig bone marrow into a human recipient may overcome the ____________________ triggered by transplanted pig organs
Fill in the blank(s) with correct word
.T cell-mediated rejection
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An important diagnostic sign of measles is
A. Koplik's spots. B. giant cells. C. fever. D. swollen lymph nodes.
In a chemical analysis of an animal tissue sample, which element would be in the least quantity?
A. carbon B. oxygen C. hydrogen D. nitrogen E. iodine
Fluorescence occurs when ____
a. a high-energy electron returns to its ground state by releasing energy in a photon b. a low-energy electron moves to a high-energy state by absorbing heat c. a high-energy electron leaves its nucleus and moves to a different molecule d. a pigment molecule accepts a high energy electron and releases a photon of energy e. the energy from an electron is transferred to a different molecule while the electron returns to the ground state
An earthworm detects sound
a. through specialized tympanic membranes located near the head. b. through a thinned region of the exoskeleton. c. through general mechanoreceptors on its skin. d. by using a specialized organ that measures the frequency of vibration of the surrounding dirt particles. e. through a series of mechanoreceptors arranged in a lateral line.