Fics like Natural Selection, Unnatural Circumstances

In an attempt to restore his lost right arm, Doctor Curt Connors subjected himself to an experimental serum made from lizard DNA. He got back his arm... but at a terrible cost. To save Curt, Doctor Martha Connors and her assistant Gwen Stacy created gene cleanser, a possible cure for the serum. They gave the serum to Spider-Man, who followed the Lizard to the Bronx Zoo. After a brutal battle, Spider-Man managed to dump the cleanser down his throat. It worked. Partially. Curt Connors is back, but he'll never be the same...

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