Lymphocyte migration. 

This short video describes how lymphocytes migrate through lymphatics which allows them to encounter foreign antigen and stimulate an immune response. Lymphocytes, such as B cells and T cells, play a vital role for the immune system to protect our bodies from infectious disease.
Video by Heather Ambraska (BHSc, MScBMC, MD).. Brought to you by the Department of Immunology and Biomedical Communications at the University of Toronto