Dissect an Alien

Dissect an Alien was a toy from 1986 where an alien could be cut open, its organs removed, with a bucket of "slime" to serve as blood. The organs were essentially a 3-d numbered puzzle. The blood was non-toxic for child safety and glowed in the dark. It included a comic with instructions, a mat, and a toy scalpel which doubled as a means to hold a dissected alien open.

This was part of the Mad Scientist line of toys.