Patent No. 600022 Disclosed is an antibody that binds to human CD37 and has a heavy chain comprising the amino acid sequence AVQLVQSGAEVKKPGSSVKVSCKASGYSFTGYNMNWVRQAPGQGLEWMGNIDPYYGGTTYNRKFKGRVTLTVDKSSSTAYMELSSLRSEDTAVYYCARSVGPMDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKRVEPKSCDKTHTCPPCPAPELLGGPDVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYR VVSVLTVLHQDWLNGKEYKCKVSNKALPAPEEKTISKAKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK and a light chain comprising the amino acid sequence DIQMTQSPSSLSASVGDRVTITCRTSENVYSYLAWYQQKPGKAPKLLVSFAKTLAEGVPSRFSGSGSGTDFTLTISSLQPEDFATYFCQHHSDNPWTFGQGTKVEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC.