Temporal expression profiles of ParaHox genes. Transcript levels of ParaHox genes were measured by QPCR at different embryonic stages including unfertilized egg (0 hpf), early blastula (12 hpf), late blastula (16 hpf), early gastrula (24 hpf), late gastrula (43 hpf), and tornaria larva (65 hpf). The Y-axis is the transcript level normalized to the 18S rRNA level at the same stage.
Ikuta et al. BMC Evolutionary Biology 2013 13:129 doi:10.1186/1471-2148-13-129