antisera produced against bovine serum albumin conjugates of trans-zeatinriboside have a high affinity ( ka=2.4.10 ( -11 ) m ) for zeatinriboside and for zeatin , but show a negligible cross reaction to isopentenyladenosine ( 0.1 % ) and cis-zeatinriboside ( 0.4 % ) , only a slight cross reaction to dihydrozeatin ( 1.7 % ) , and no cross reaction at all to other purines , such as adenosine and related , compounds , was observed .
C0022218
isopentenyladenosine
C0001443
adenosine