P4HB and neoplasm: In contrast, non-tumor tissue showed lower percentages of expression of Hsp40 (16.5%), Hsp60 (16.2%), Hsp70 (16.6%), Hsp90 (16.3%), Hsc70 (16.7%), integrin β1 (16.4%), integrin β2 (14%), integrin β3 (16.2%), PDI (17.1%), and ERp57 (1.5%) (Fig 3C).