American Men and Women of Science American Men and Women of Science American Men and Women of Science (33rd edition, published 2015) is a biographical reference work on leading scientists in the United States and Canada, published as a series of books and online by Gale. "American Men and Women of Science" profiles living persons in the physical and biological fields, as well as public health scientists, engineers, mathematicians, statisticians, and computer scientists. According to the publisher, those included met the following criteria: (1) Distinguished achievement, by reason of experience, training or accomplishment, including contributions to literature, coupled with continuing activity in scientific work; or (2)
Lymph hearts pumps lymph into the jugular vein. The other pair at the end of the vertebral column pump lymph into the iliac vein in the legs. "Rana catesbiana" and "Rana nigromaculata" have mast cells in the lymphatics of the tongue. These are round and in the monocellular layer of the lymphatic walls either in close adhesion or in contact with the cytoplasmic process. The lymph hearts rhythmically and slowly pump to drive the lymph into the veins. It is possible to see the lymph hearts beat by looking on the dorsal surface on either side of the urostyle. In the toad