Original post here. This image was researched by Bacchus at ErosBlog as part of the “Γ commission.” It was originally published at Hedonix as “Γ 007 – Becoming Tigra.” Here is Bacchus’s research:

All instances of this comic book artwork on the web appear to trace back to this blog post, where it appears in concert with several panels featuring the tiger-woman Tigra, panels that probably first appeared in Marvel Comic’s Giant Sized Creatures #1 (July 1, 1974). Although that book does not appear to be freely available online, a summary here describes a flashback scene that tells Tigra’s origin story:

In an underground lab, the caged Tigra watches as Hydra agents dismantle the place looking for something called the “Final Secret”. She recalls the events leading to this point. As Greer Nelson, under the aegis of scientist Dr. Joanne Tumolo, she became the crimefighter known as the Cat. A day earlier, she foiled a kidnap attempt of Tumolo by Hydra, but was shot with a radiation pistol. To save Greer’s life, Tumolo revealed herself to be from a race of cat people, and that Greer would live if she became one of them. In the Cat People’s lair in a cave in Mexico, Greer underwent the ritual that transformed her into Tigra.

It seems likely that the “You’re going to die of alpha radiation! There’s only one way we can save you!” dialog would have followed immediately upon her having been shot with a radiation pistol, and that “there’s only one way” refers to the subsequent ritual.