Recent comments in /f/askscience

Tasty-Fox9030 t1_j4ffbog wrote

Reply to comment by wakka55 in How are animals given specific types of cancer for the purpose of medical experimentation? by InZerSchtinker

This sounds so cartoonishly evil that it's difficult to believe, but people have actually been deliberately injected with human cancer cells and they generally do NOT get established.

Horrible but true:

Tuskegee syphilis study not America's only medical scandal https://aquila.usm.edu/cgi/viewcontent.cgi?article=1242&context=ojhe

In general it's going to be ok because a healthy immune system is going to recognize the cells as foreign. The problem with getting cancer for the most part is that they ARE your cells. (Ideally your body recognizes your own cancer cells anyway but you get the idea.) If you're immunosuppressed for whatever reason it's possible.

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HolyGig t1_j4fb52z wrote

Reply to Is there an upper limit on the size of a ship? by LilyFish-

There is theoretically nothing stopping you from making a ship as big as you want it to be. Practically speaking, that ship still needs to fit into harbors, through canals and enter drydocks for maintenance.

Ship size is limited by the infrastructure necessary to support it, not any sort of engineering limitations.

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