X-Nico

unusual facts about IgM



Aiolosaurus

Aiolosaurus was named in 2000 on the basis of a single holotype specimen cataloged as IGM 3/171.

Dukecynus

Dukecynus was discovered in the strata of La Venta in the department of Huila and Tolima in Colombia, where the fossil remains were found: the lower jaw and upper jaw with teeth (holotype specimen IGM 251149), more some referred molar teeth.

Hyper-IgM syndrome type 4

Hyper-IgM syndrome type 4 is a form of Hyper IgM syndrome which is a defect in class switch recombination downstream of the AICDA gene that does not impair somatic hypermutation.

Hypergammaglobulinemia

Immunodeficiency with hyper IgM type 2 is caused by a mutation in the Activation-Induced Cytidine Deaminase (AICDA) gene, which is located on the short arm of chromosome 12.

Immunodeficiency with hyper IgM type 5 is caused by a mutation in the Uracil-DNA glycosylase (UNG) gene, which, like AICDA, is located on chromosome 12.

Reproductive immunology

Anti sperm antigen has been described as three immunoglobulin isotopes (IgG, IgA, IgM) each of which targets different part of the spermatozoa.

Typhidot

The test is based on the presence of specific IgM and IgG antibodies to a specific 50Kd OMP antigen, which is impregnated on nitrocellulose strips.

Waldenström's macroglobulinemia

Bone marrow tumour cells express the following antigen targets CD20 (98.3%), CD22 (88.3%), CD40 (83.3%), CD52 (77.4%), IgM (83.3%), MUC1 core protein (57.8%), and 1D10 (50%).


see also