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Fig. 7. Impact of the ellipsoid on enhancement factor and relative sensitivity for chicken cone photoreceptors. (A) Enhancement factors with and without the ellipsoid. Dashed lines show enhancement factors without the ellipsoid; solid lines show enhancement factors including both ellipsoid and oil droplet. Greatest increase is seen for the violet-sensitive (VS) cone, which with the addition of an ellipsoid has an enhancement factor much larger than 1. In the SWS and MWS receptors, a small increase is seen. In the LWS receptor, a very slight decrease in enhancement is seen for the visible spectrum. (B) Relative sensitivity of chicken cones with and without the ellipsoid. Ocular media transmittance is included as measured by Lind and Kelber (2009b). Image published in: Wilby D and Roberts NW (2017) © 2017. This image is reproduced with permission of the journal and the copyright holder. This is an open-access article distributed under the terms of the Creative Commons Attribution license Larger Image Printer Friendly View

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