Figure 8
![Figure 8](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1423-0127-16-105/MediaObjects/12929_2009_Article_105_Fig8_HTML.jpg)
Differential expression of MMP-9 by the NPC-BM1 parental line and its sublines (NPC-BM00. --BM18, -BM280) detected by gelatin zymography. Cells were cultured for 3 days and the condition media were harvested and processed for gelatin zymography analysis as described in Materials and Methods. Lane 1, conditioned medium from NPC-BM18; lane 2, from NPC-BM29; lane 3, from NPC-BM00; lane 4, from parental cell NPC-BM1.