A monoclonal immunoglobulin light chain originally found in the urine, detection of which may be suggestive of multiple myeloma or Waldenström's macroglobulinemia.

A meat analog derived from soy, a by-product of extracting soybean oil, in the form of small chunks that can be reconstituted with water and cooked.

(biochemistry, immunology) Any of a class of proteins whose plasma concentrations change in response to inflammation, such as C-reactive protein.

A family of proteins and their encoding genes found in vertebrates resulting from the triplicate replication of the ancestral single gene found in non-vertebrates, that concern activity of microtubules and actin filaments.

(biochemistry) A class of proteins produced when an organism undergoes heat stress or stress, which is then used to bind to heat intolerant proteins to stabilize their structures, and initiate some of the organism's stress responses.

A protein that binds to single-stranded regions of DNA to prevent premature annealing.

(biochemistry) An intermediate filament protein expressed by numerous cell types of the central nervous system.

(pathology) A rare allergy to certain proteins found in human semen.