satire on the sexual seventy . parable on man grow devotion to science . simple horror film . it just might be all three . you could also put this in the invasion of the body snatcher or live dead mold and a group that never stop and you either become one or die . however you look at this movie and it be real fun . there be plenty of gore scene and most featuring strange growth on people . then and there be also a heap help of bare breast . my favorite scene be where one of the hotel staff trick a couple into a large room where a parasite orgy be go on . he undress while stick out his tongue . now and that be scary . the sole weakness of the film be that it be seriously date and some scene be funny now simply because of people clothe . but the best joke of the movie be intentional while when sex be the sickness and who doesn not want it . p. s. they come from within be the the best of title and but it come from within would have be well .