Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar wucewa: Duk dabbobi sun ƙunshi ƙwayoyin halitta, waɗanda ke kewaye da halayyar ƙwayoyin cuta na waje wanda ya ƙunshi collagen da glycoproteins na roba. A yayin ci gaba, matattarar ƙwayoyin halittar dabbobi suna samar da tsarin sassauƙa wanda ƙwayoyin za su iya motsawa kuma su sake tsarawa, suna ba da damar samar da tsari mai rikitarwa. Wannan na iya zama calcified, samar da tsarin kamar bawo, kasusuwa, da spicules. Akasin haka, ƙwayoyin wasu kwayoyin halitta masu yawa (galibi algae, tsire-tsire, da fungi) ana riƙe su a cikin gida ta bangon sel, don haka suna haɓaka ta ci gaba. Kwayoyin dabbobi kawai suna da haɗin sel da ake kira junctions tight junctions, gap junctions, da desmosomes. Tare da 'yan kaɗan musamman, sponges da placozoans jikin dabbobi sun bambanta cikin kyallen takarda. Waɗannan sun haɗa da tsokoki, da suke sa mutum ya yi motsi, da kuma jijiyoyi, da suke ba da saƙo kuma suke tsara yadda jiki yake aiki. Yawanci, akwai kuma ɗakin narkewa na ciki tare da ko dai buɗewa ɗaya (a cikin Ctenophora, Cnidaria, da flatworms) ko buɗewa biyu (a cikin mafi yawan bilterians).  Tambaya: matattarar ƙwayoyin cuta na ƙwayoyin cuta a cikin dabbobi kuma za a iya hada su da menene?
collagen da kuma glycoproteins na roba