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Negative (A. 100 ×; B. 200 ×; C. 400 ×); Weakly positive (D. 100 ×; E. 200 ×; F. 400 ×); Strongly positive (G. 100 ×; H. 200 ×; I. 400 ×). ATRX-low astrocytic tumors harbored lower MGMT expression (J. p < 0.001).
