Meaning of Western blot

West'ern blot'

Pronunciation: [key]
— Biol., Med. Biol.,Med.
  1. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.