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Summary of results on DNA methylation and BnMET1a-like expression during gametophytic and embryogenic pollen development. +, Low; ++, medium–high; +++, highest. A common pattern of methylation level and BnMET1a-like expression is seen in all differentiating cell types (grey) and all proliferating cell types (white) in both developmental processes (this figure is available in colour at JXB online).
