Boucle yarn is a loose, three ply yarn with a characteristic curly appearance. Used in weaving, knitting, and crocheting, boucle...
Cold agglutinins are antibodies that cause clumping or agglutination of RBCs at cold temperatures in individuals with certain conditions or who are infected by particular organisms. Cold agglutinins are associated with Mycoplasma pneumoniae infection. M. pneumoniae has i antigen specificity to human RBC membranes. Fetal cells largely contain i antigens, but by 18 mo most cells carry the I antigen.
1 Agglutination with Polyspecific AHG indicates a positive DAT, due to either IgG antibodies or complement coating the patient's cells. 2  Agglutination with Anti-IgG indicates antibody (immunoglobulin) is coating the cells.  Agglutination with Anti-C3 indicates complement is coating the cells.