ALEXANDRIA, Va., April 22 -- AB Biosciences, Allston, Massachusetts, has been assigned a patent (9,624,290) developed by Hsiu-Ching Chang, Lexington, Massachusetts, for "lowered affinity antibodies and methods of making the same."

The patent application was filed on Jan. 28, 2011 (13/575,219). The full-text of the patent can be found at http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9,624,290.PN.&OS=P . . .