Figure 3. Comparison of SDS-extracted proteins derived from the proband and a normal human cornea. The extracted proteins were analyzed by reduced SDS–PAGE and stained with coomassie blue. The 64 kDa band in lanes 2 and 3 (see arrow) were excised, digested with trypsin, and identified as TGFBIp by MALDI mass spectrometry fingerprint analysis. Lane 1: molecular size markers; Lane 2: normal human cornea; Lane 3: cornea of proband.