Steve-centric human experimentation fics?

[korpikarppi.livejournal.com]

Any fics where Steve is experimented on by f. ex. the army (or threatened with experimentation)? So basically fics that involve unethical human experimentation with Steve as the central character. If there's a pairing, I'd prefer Steve/Tony. Oh, and no non-con please.

Specific search

[caedesdeo.livejournal.com]

So I just saw this on tumblr:

(Source)

And wondered if anybody knew what it was from? The original post just lists 'fandom: Captain America'.

Spn/avengers crossover fics

[spn-lov3r.livejournal.com]

So this is kind of a weird request, but wondering if there are any good supernatural/avengers crossover fics. I'd especially love it if it involves some sort of romantic pairing between the characters, but gen fics are fine too.

Thanks! ^^