Visualization of axonal projections from photoreceptor neurons of the com- 
pound eye to the optic ganglia in the brain o/Drosophila. This section has been 
stained with two different neuron- specific antibodies that recognize photore- 
ceptor cell membranes (red) and neuronal nuclei (green), respectively. Pho- 
toreceptor axons can be seen to terminate in two distinct regions of the brain. 
From Selleck, S.B., and Steller, H. 1991. Neuron 6:83-99. 
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