Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1756-9966-29-106/MediaObjects/13046_2010_Article_353_Fig1_HTML.jpg)
HSP70 expression in LSCC tissues. High HSP70 expression in late stage of LSCC tissues (a-b) was showed comparing to the low HSP70 expression in early stage LSCC(c), (d) is the negative control show the specificity of the antibody. HSP70 shows strong expression (scored as 3+, a), moderate expression (scored as 2+, b), weak expression (scored as 1+, c), and negative expression (scored as 0, d) in cytoplasm(×400).