I nclude the bone marrow, lymph nodes, spleen, and thymus. Precursor cells in the bone marrow produce lymphocytes. B-lymphocytes (B-cells) mature in the bone marrow. T-lymphocytes (T-cells) mature in the thymus gland. Besides providing a home for lymphocytes (B-cells and T-cells), the ducts of the lymphatic system provide transportation for proteins, fats, and other substances in a medium called lymph.
A book that is made with a stiff paper cover and bound directly to the text block. Many paperback books are converted to hardcover books by mylar binding. Perfect bind
A hydraulic machine used to compress and adhere the glued text block to the book case. Oversize books are pressed off in the hand book press. The cased-in text block is placed between the platens of the machine, which then close and exert great pressure. Heated jaws compress the case along its hinges to form tight front and back joints. Back to Top. I