Gamera vs Monster X (U.S. Version) (1970)

aka's: Gamera Tai Daimaju Jaiga/ Gamera vs. Jiger: Monsters Invade Expo '70/Gamera vs. Giger/
ガメラ対大魔獣ジャイガー

A giant monster attacks Japan during Expo '70 and it's up to Gamera to stop it. But the monster injects Gamera with its offspring and then a research team must launch a craft into Gamera's body to eliminate the parasite. Stars Tsutomu Takakuwa, Kelly Varis and Katherine Murphy. This is the English language version of Gamera vs. Jiger: Monsters Invade Expo '70 (also available here at Rare Movie Collector).