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Different plant parts of A. nigra used to extract bioactive compounds. a Alternate phyllotaxy of plants, inset depicts the stolon type of rhizome; b racemose type of inflorescence, inset shows single flower, c developing fruit cluster, inset shows mature seeds, d pulpy dehusked fruit (trilocular), e locules and mature seeds, f different stages of fruit maturity and g longitudinal and cross-sectional view of the immature fruit
