Monoclonal antibodies to treat cancer. One way the immune system attacks foreign substances in the body is by making large numbers of antibodies. An antibody is a protein that sticks to a specific protein called an antigen.Antibodies circulate throughout the body until they find and attach to the antigen.ne way the immune system attacks foreign substances in the body is by making large numbers of antibodies. An antibody is a protein that sticks to a specific protein called an antigen. Antibodies circulate throughout the body until they find and attach to the antigen.
The average weight is 6 to 10 pounds, but king crab can grow to more than 20 pounds. Unlike other crabs, king crabs have only six legs versus eight legs, and two claws. The body or carapace section of king crabs is typically sent to canners while the legs are separated and served individually.
They are in the Subphylum Crustacea. This subphylum ranges in size from microscopic copepods to the king crab-with a leg span of over 12 feet. Crayfish and close relatives like lobsters are sometimes called decapods - meaning that they have ten feet, or five pairs of legs.Crayfish actually have four pairs of walking legs.The other pair of legs are the chelipeds-commonly refered to as pinchers.he body of the crayfish is covered by a two-part exoskeleton made of chitin. Chitin contains a high percentage of calcium, similar to your fingernails. 1  Cephalothorax-the head (5 segments) and thorax (8 segments). 2  Abdomen-composed of 7 segments.