Dr.Shearing knew that Cross had been ""viraled off"" the green pills eight months earlier - that""s why he wasn""t feeling the effects of physical degradation ("They infected you with live virus, which means that, physically, you""re stable.[This particular shot paid homage to director King Vidor""s similar sea-of-desks image in the silent film classicThe Crowd (1928).That""ll take the heat off us.These guys are gonna have their hands full." [Note: This was the only instance in any of the Romero ""Dead"" films for a character to mentionthe word ""zombie""."Plot SynopsisDuring the film""s credits, Walt Disney personally thanks he members of his animation staff:My sincere appreciation to the members of my staff whose loyalty and creative endeavor made possible this production.Wade was injected with a special serum - he was told that it "activates any mutant genes lurking in your DNA.