Cal ni heterodimer, igizwe na MRP 8 na MRP 14. Iba muri neutrophile cytoplasm kandi ikagaragarira kuri selile monon nuclear.Cal ni poroteyine ikaze, ifite icyiciro gihamye hafi icyumweru kimwe mumyanda yabantu, yiyemeje kuba ikimenyetso cyindwara yumura.Igikoresho ni ikizamini cyoroshye, kigaragara cyerekana ikizamini cyerekana inyana mumyanda yabantu, gifite sensibilité yo hejuru kandi yihariye.Ikizamini gishingiye kuri antibodiyite yihariye yihariye ya sandwich reaction hamwe na zahabu immunochromatographic assay isesengura tekinike, irashobora gutanga ibisubizo muminota 15.