Western blot

Western blot

noun Biology, Medicine/Medical.
a highly sensitive procedure for identifying and measuring the amount of a specific protein in a mixed extract, as in testing for AIDS virus protein in a blood sample: proteins are separated by gel electrophoresis and transferred to a special filter paper, on which the protein under investigation can be detected by a probe, as the binding of a labeled antibody.

Origin:
originally a facetious counterpart to Southern blot
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Western_blot is always a great word to know.
So is organ. Does it mean:
subject to different laws of growth or specialization
a grouping of tissues into a distinct structure, as a heart or kidney in animals or a leaf or stamen in plants, that performs a specialized task
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