Figure 1. . Action spectra of Xenopus rods at different developmental stages. The normalized dim-flash sensitivity was calculated from r/IF (see text), and the sensitivity at 520 nm was then arbitrarily renormalized to unity. Data from one rod at each stage. Symbols: ○, stage 48; ▴, stage 50; ⋄, stage 55; ▪, stage 62; ★, frog at size of 2.5–5cm. Curve is drawn from Eq. 4.
Image published in: Xiong WH and Yau KW (2002)
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