Advanced NMR Systems Inc said itextended the exercise period for its class A and class B
warrants by one year.
    The company said class A warrants, entitling the purchase
of one share in Advanced Systems and one class B warrant at
four dlrs per unit, will now be execrisable unitl Aug 18 1988.
    The class B warrants, entitling the purchase of one share
of common stock at six dlrs per share, are now exercisable
unitl Aug 18 1989.
 Reuter
