Related Experiment Video
Updated: Oct 2, 2026

Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination
Published on: September 24, 2014
Breast milk antibody to the capsular polysaccharide of Haemophilus influenzae type b
Abstract:
Breast milk has a high concentration of secretory immunoglobulin and potentially could serve as a source of passive antibody protection of infants against systemic invasion by Haemophilus influenzae type b. Specific antibody to the capsular polysaccharide of this organism was detected in the colostrum and all subsequent milk samples in 11 of 12 women with a radioactive antigen binding assay. The geometric mean concentrations of antibody were 1.99 microgram/ml in colostrum and 0.18 microgram/ml in breast milk at six weeks and after four and one-half to six months of lactation. Antibody levels in colostrum correlated positively with those in subsequent milk samples; levels after six weeks of lactation correlated highly with those present after four and one-half to six months of lactation. IgA was the predominant immunoglobulin class of anticapsular antibody in the colostrum and milk samples as detected by an enzyme-linked immunosorbent assay.
Related Concept Videos
Vaccinations
Hybridoma Technology
Hybridoma Selection
Commonly used fusion techniques — electroporation, polyethylene glycol...
Development of Immunocompetence
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Bacterial Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology

