ETA: Thanks for the workaround guys! It's fixed. High-fives all around.
I am sort of dying of embarrassment of how my post that just got mainpaged doesn't have a working image.
And it's an important image too, since it's a diagram showing exactly how the proteins fit together to activate the immune system.
I initially linked it, and it works as a thumbnail but not within the article.
When I tried to upload the image directly, it disappeared.
This just Kinja? (fist shaking!).