An kiyasta cewa mutane suna samar da kimanin biliyan 10 daban-daban antibodies, kowannensu yana iya ɗaure wani nau'i na antigen. Ko da yake an samar da nau'o'i daban-daban na antibodies daban-daban a cikin mutum daya, yawan kwayoyin halittar da ake amfani da su don yin wadannan sunadarai yana iyakance da girman kwayoyin halittar mutum. Da dama hanyoyin da aka tsara na kwayoyin halittar sun samo asali wanda ya ba da damar kwayoyin halittar B don samar da nau'i daban-daban na kwayoyin halittar daga ƙananan kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halittar kwayoyin halitta
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