▁The ▁mole cules ▁that ▁complete ▁this ▁binding ▁consist ▁of ▁prote ins , ▁car bo h yd r ates , ▁and ▁lip ids , ▁resulting ▁in ▁a ▁variety ▁of ▁g ly cop rote ins , ▁li pop rote ins , ▁and ▁g ly col ip op rote ins . ▁Studies ▁suggest ▁g ly can - gly can ▁interactions , ▁observed ▁to ▁be ▁approximately ▁ 2 0 0 - 3 0 0 p N , ▁also ▁may ▁play ▁a ▁role ▁in ▁cell - cell ▁recognition . ▁Complex ▁car bo h yd r ates , ▁in ▁particular , ▁have ▁been ▁studied ▁to ▁be ▁extremely ▁integral ▁in ▁cell - cell ▁recognition , ▁especially ▁when ▁it ▁is ▁recognized ▁by ▁complement ary ▁car bo h yd r ates . ▁In ▁order ▁to ▁ensure ▁a ▁proper ▁binding ▁site ▁by ▁checking ▁the ▁surrounding ▁areas ▁or ▁se cur ing ▁a ▁bond ▁that ▁was ▁previously ▁made ▁complex ▁car bo h yd r ates ▁and ▁their ▁complement ary ▁car bo h yd r ates ▁are ▁able ▁to ▁create ▁flexible ▁interaction ▁systems . ▁These ▁interactions , ▁although ▁observed ▁to ▁be ▁weak , ▁have ▁been ▁studied ▁in ▁a ▁variety ▁of ▁test ▁subjects ▁including , ▁but ▁not ▁limited ▁to , ▁mouse ▁emb ry onal ▁cells , ▁cor ne al ▁ep ith el ial ▁cells , ▁and ▁human ▁emb ry onal ▁car cin oma ▁cells . ▁ ▁Bi ological ▁functions ▁for ▁intr insic ▁recognition ▁▁ ▁G row th ▁and ▁development ▁ ▁One ▁of ▁the ▁more ▁basic ▁versions ▁of ▁cell - cell ▁recognition ▁for ▁ad hes ion ▁can ▁be