Megacins - ț̢
Bacteriocins elaborated by mutant strains of Bacillus megaterium. They are protein or protein-lipopolysaccharide complexes lethal to other strains of the same species.
Synonyms : Megacin, Megacin A
Megacolon - ț̢
Dilatation of the COLON, often to alarming dimensions. There are various types of megacolon including congenital megacolon in HIRSCHSPRUNG DISEASE, idiopathic megacolon in CONSTIPATION, and TOXIC MEGACOLON.
Synonyms : Megacolons
Megacolon, Toxic - ț̢
An acute form of MEGACOLON, severe pathological dilatation of the COLON. It is associated with clinical conditions such as ULCERATIVE COLITIS; CROHN DISEASE; AMEBIC DYSENTERY; or CLOSTRIDIUM ENTEROCOLITIS.
Synonyms : Toxic Megacolon
Megakaryocytes - ț̢
Very large BONE MARROW CELLS which release mature BLOOD PLATELETS.
Synonyms : Megakaryocyte
Megaloblasts - ț̢
Red blood cell precursors, corresponding to ERYTHROBLASTS, that are larger than normal, usually resulting from a FOLIC ACID DEFICIENCY or VITAMIN B 12 DEFICIENCY.