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This paper extends the recent result due to Hsu (2010) about removable singularities of semilinear parabolic equations. Our result is applicable to solutions of equations of the form −∆u + ∂tu = |u| p−1 u with 0 ≤ p < n/(n − 2). The proof is based on the parabolic potential theory and an iteration argument. Also, we prove that if 0 < p < (n + 2)/n, then integral solutions of semilinear parabolic equations with nonlinearity depending on space and time variables and u p are locally bounded. Thisdoi:10.1090/s0002-9939-2013-11739-9 fatcat:pcvipzwjwzdbln2ec4h2hmvrzu