"'Embryos are like photograph film,' said Mr. Foster waggishly, as he pushed open the second door. 'They can only stand red light.'
And in effect the sultry darkness into which the students now followed him was visible and crimson, like the darkness of closed eyes on a summer's afternoon. The bulging flanks of row on receding row and tier above tier of bottles glinted with innumerable rubies. . . ."
- Aldous Huxley
- Brave New World