Cal bụ heteodimmer, nke mejupụtara Mrp 8 na MrP 14. Ọ dị na neutrophils cytoplasm ma kwupụta na membran sel. Cal bụ nnukwu protein protein, ọ nwere usoro kwụsiri ike n'ihe dị ka otu izu na faces mmadụ, kpebisiri ike ịbụ eriri ọrịa ọrịa na - emegharị ọrịa. The Kit bụ ule mmekọrịta Seminetive nke na-achọpụta cal na eze mmadụ, ọ nwere agụụ nchọpụta nchọpụta dị elu na nkọwa siri ike. Nnwale ahụ dabere na usoro a na-enyocha ihe dị elu na-acha odo odo na-acha odo odo na ọla edo immunochiographiccatograph na nyocha Assics Assics, ọ nwere ike ịnye nsonaazụ n'ime nkeji iri na ise.