|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
ELISA (ĭ-lī'zə, -sə)
Enzyme-linked immunosorbent assay; a sensitive immunoassay that uses an enzyme linked to an antibody or antigen as a marker for the detection of a specific protein, especially an antigen or antibody.
enzyme-linked immunoadsorbent assay