It shows a ventral view of stage 16 Drosophila melanogaster embryo immunostained for Tropomyosin (green; muscle), Pax 3/7 (blue; segmentally repeated nuclei in CNS and ectoderm), and anti-HRP (red; cell bodies and axons of the nervous system). All nuclei shown in gray (DAPI).
The winning image was captured by Julieta María Acevedo of the Fundacion Instituto Leloir in Argentina, and Lucas Leclere of the Sars International Centre for Marine Molecular Biology in Norway. Congratulations!
The runner-up was an immunostaining of a butterfly wing disk, taken by Alessandro Mongera, Maria Almuedo Castillo, and Jakub Sedzinski. The image of a C. elegans head, taken by Eric Brooks and John Young, got third place, and the final image, of a 3rd instar Drosophila wing disk, was the work of Lynn Kee.
Meanwhile, you’ll see the winner of the previous round on the cover of Development tomorrow, so keep an eye on the journal website.