Aggregated lymphatic follicles –>
Peyer’s patches
lymphoid organs located in the sub mucosal tissue of the mammalian gut containing very high proportions of iga secreting precursor cells. The patches have B and t dependent regions and germinal centres. A specialised epithelium lies between the patch and the intestine. Involved in gut associated immunity.
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
This tutorial is a continuation of the first lesson on chromosomal mutation. Here, find out the chromosomal aberrations ..
This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..