Western blotting data on molecular chaperones in exosomes. (A) Western blots showing the presence and levels of Hsp27, Hsp60, and Hsp90 in the exosomes studied. Visible are the higher levels of Hsp27, Hsp60, and Hsp90 in the exosomes from plasma from patients with papillary carcinoma before surgery (BS) compared with those obtained from either the same patients after surgery (AS) or from patients with goiter. The difference of Hsp27 levels between patients with papillary carcinoma BS and AS and with goiter was statistically significant (B), whereas Hsp60 (C) and Hsp90 (D) levels in patients with papillary carcinoma BS and AS were statistically significant when compared with patients with goiter.