ON THE COVER
Keller Valsecchi et al. analyzed the epigenetic regulation of the X chromosome in Anopheles gambiae. Confocal image of a male adult mosquito midgut surrounded by Malpighian tubules stained with Histone H3 Lysine 27 trimethylation (red), nuclei (blue), and actin (white).
Image © 2021 Keller Valsecchi et al.