![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidnJ6t9oPT8f6ke7mZ86PT_aIGcdpjVsuX7mNZ7R2eqK-vB1YybQWfHfqveFz91CHYJm56zDU-VbI6fdh2TFL4YQkC1wCM44aooU42tk6r7SrYqWSu0FnVqUV9d2lijgH3zfhmPoGUro6j/s400/egg_fl.gif)
(Idea from Harold B. White published in Biochemistry and Molecular Biology Education Vol 28 No 1 pp 35-36, 2010.)
If you put eggs under a UV light they will glow scarlet. The same pigment is what makes earthworms purplish, and it is very light sensitive, meaning it's why earthworms fry in the sunlight (say, after a good rain when they come out).
More at this link. I sense a future biochemistry demo!
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