Related Experiment Video
Updated: Apr 22, 2026

Indirect Immunofluorescence on Frozen Sections of Mouse Mammary Gland
Published on: December 1, 2015
The mammary gland as an immunological organ
1Department of Clinical Immunology, Institute of Medical Microbiology Sweden; Department of Pediatrics, University of Göteborg, Göteborg, Sweden.
Abstract:
It has been known for decades that milk contains antibodies but because they were not resorbed by the breast-fed infant they were long regarded to be of no biological significance. However, with the discovery that the dominant milk immunoglobulin was secretory IgA - the first description of this class of antibody - came the realization that breast milk was potentially important for the infant's anti-microbial defense. In this review Lars Hanson discusses the protective capacity of milk and the role of milk IgA in the mucosal defense system.
Related Concept Videos
The Mammary Glands
Each breast features a pigmented projection known as the nipple, through which milk emerges via closely spaced openings of ducts, referred to as lactiferous ducts. Surrounding the nipple is a circular pigmented area of skin named the areola, which appears rough due to...
Secondary Lymphoid Organs
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
Lymphoid Cells and Tissues
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
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...
Functions of the Lymphatic and Immune System
The primary lymphoid organs, including the bone marrow and the thymus, serve as the maturation sites for lymphocytes. Secondary lymphoid organs, like the mucosa-associated lymphoid tissue, activate these lymphocytes and serve as...
Introduction to Lymphatic and Immune System
The immune responses can be categorized into two types: innate and adaptive. Innate immunity comprises nonspecific defenses we are born...

