mucolipidosis One of a group of storage diseases in which both lipids and substances called mucopolysaccharides accumulate in the tissues of the body. Four different mucolipidoses have been identified, numbered I through IV. All four are lysosomal disorders—that is, the lysomes are organelles within the cell that contain enzymes that can digest (lyse) substances—and all…
mucocutaneous lymph node syndrome See Kawasaki disease.
mucocele A swelling consisting of an accumulation of mucus. See also mucus.
mtDNA Mitochondrial DNA.
MSUD Maple syrup urine disease.
MSAFP Maternal serum alpha-fetoprotein.
MS Multiple sclerosis.
MRSA Methicillin-resistant Staphylococcus aureus.
mRNA Messenger RNA.
MRI Magnetic resonance imaging.
MRC 1 Medical Research Council. 2 Medical Reserve Corps.
MPS4 Mucopolysaccharidosis type IV. See Morquio syndrome.