File talk:RetinalCisandTrans.svg
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Why is the oxygen coloured in red? Could you please add this information to the image description? --MilSin (talk) 10:11, 20 September 2017 (UTC)
Why is the oxygen coloured in red? Could you please add this information to the image description? --MilSin (talk) 10:11, 20 September 2017 (UTC)[reply]
