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Photographs illustrating the potential irritation or toxicity on vascularization before exposure to the test samples (0 min) and after the exposure for up to 5 min by using HET-CAM assay. Hex: n-Hexane, Chl: Chloroform, Met: Methanol, UT: before treatment, T: after treatment, N: Negative control (0.9% NaCl), P: Positive control (0.1 N NaOH)
