A lung of bismuth

The lungs of a pigeon got dissected by hardening it with alcohol and painting it with a mixture of metals, including Bismuth. The tissue got etched off afterwards. (From the catalogue of the scientific collection of Humboldt-Universität of Berlin)

Here is more bismuth in form of grown crystals:

Or, how Christopher (Lets all walk over and say "Hi" - AGE: 19; TOP MOVIES: Steve Zissou; Dr. Strangelove, anything with zombies in it; LIKES: stupid facts, apple juice and delicious food; CURRENT OBSESSIONS: World of Warcraft; ANYTHING ELSE?!: It's 1a.m and I have a class tomorrow at 9a.m) would say:

(Click to enlarge)

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