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(A) Heated spherical particles on cells on day 2 (mag. ×200). (B) Heated iron particles on cells on day 2 (mag. ×200). (C) Control vial on day 2 (mag. ×200). (D) Spherical particles on cells in control vials on day 2 (mag. ×200). (E) Iron particles on cells in control vials on day 2 (mag. ×200). (F) Hemocytometry cell count of cell growth. Results with standard error of mean (N = 3).
