Fig. 2

Expression of the main components of the BMP signalling cascade comprising the DV patterning system. Panels show whole-mount in situ hybridisation of C. albipunctata blastoderm-stage embryos. All embryos shown in lateral view with anterior to the left, dorsal to the top, except d (ventral view) and f (dorsal view). Stains as indicated in panels: a dpp (blue)/zen (red); b dpp (red)/sog (blue); c sog (blue)/zen (red); d sog (blue); e tkv (blue)/zen (red); f tkv (blue); g tld (blue)/sog (red); h tld (blue)/zen (red); g′, h′ DAPI nuclear counterstaining of embryos in g, h. Counterstains were used for staging as described in [30]: f/f′ is at cleavage stage 11 (C11), and g/g′ is at cleavage stage 14 (C14)