▁it ▁plays ▁an ▁important ▁role ▁in ▁imm un ology ▁of ▁inf ants ▁in ▁human ▁milk ▁feed ing . ▁Where as ▁the ▁skin ▁is ▁a ▁protect ive ▁bar rier ▁due ▁to ▁its ▁dry ness ▁and ▁acid ity , ▁the ▁conj unct iva ▁( m emb rane ▁covering ▁the ▁eye ) ▁is , ▁instead , ▁protected ▁by ▁secret ed ▁en zym es , ▁mainly ▁ly so zym e ▁and ▁def ens in . ▁However , ▁when ▁these ▁protect ive ▁bar riers ▁fail , ▁conj unct iv itis ▁results . ▁ ▁In ▁certain ▁can cers ▁( es pecially ▁my el omon oc yt ic ▁le uk emia ) ▁excess ive ▁production ▁of ▁ly so zym e ▁by ▁cancer ▁cells ▁can ▁lead ▁to ▁to xic ▁levels ▁of ▁ly so zym e ▁in ▁the ▁blood . ▁ ▁High ▁ly so zym e ▁blood ▁levels ▁can ▁lead ▁to ▁kid ney ▁failure ▁and ▁low ▁blood ▁pot ass ium , ▁conditions ▁that ▁may ▁improve ▁or ▁resolve ▁with ▁treatment ▁of ▁the ▁primary ▁m align ancy . ▁ ▁Ser um ▁ly so zym e ▁is ▁much ▁less ▁specific ▁for ▁diagn osis ▁of ▁sar co idos is ▁than ▁ser um ▁ang iot ens in ▁converting ▁en zym e ; ▁however , ▁since ▁it ▁is ▁more ▁sensitive , ▁it ▁is ▁used ▁as ▁a ▁marker ▁of ▁sar co idos is ▁disease ▁activity ▁and ▁is ▁suitable ▁for ▁disease ▁monitoring ▁in ▁proven ▁cases . ▁ ▁Chem ical ▁synth esis ▁▁ ▁The ▁first ▁chemical ▁synth esis ▁of ▁a ▁ly so zym e ▁protein ▁was ▁attempted ▁by ▁Prof . ▁George