Fig. 5. Mid expression in NBs, GMCs and neurons. Wild-type (A-I) and
los1 mutant (J-L) Drosophila embryos of
the indicated ages stained with Mid (red) and Wg (green) antibodies. Anterior
is up; vertical lines mark the midline. M, M-neuron; X?, this Mid-positive
cell appears to be the X-cell; arrow with asterisk, the extra RP2. Rows of NBs
are indicated by numbers at the midline. The schematics illustrate NB maps
corresponding to A-C and D-F.