The Company of Biologists

Table 1.

Densities of dv photoreceptor cells^¹expressing either P450 or P357 in dorsal and ventral halves of the central retina of Manduca sexta

	Dorsal^²	Ventral
dv cells expressing P450	35 ± 9.3 (6)	139 ± 18.6 (8)
dv cells expressing P357	63 ± 9.4 (7)	57 ± 15.9 (8)

Values are means ± s.e.m. (sample size is given in parentheses).

Number of stained cells per 100 retinulae.

Dorsal rim not included.