Red king crab blood has leukocytes and the 2nd-most commonly encountered respiratory pigment named hemocyanin.[25]: 488 Arthropod hemocyanin is a definite variation certain to arthropods and it is a metalloprotein that makes use of copper atoms that are bound to its framework. By retaining the following pointers in your mind, https://douglasb317ssr4.wikifordummies.com/user