00261nam a22000857a 4500100002300000245008200023260004900105300000900154650001200163  aWimalasiri,H.B.U.S  aCloning of Recombinant Fruit Bromelian Gene into pET 28a(+) Expression Vector  aColombobInstitute of Chemistry Cetlonc2013  a36 p  acloning