After levering out the disc filing system chip, loading proceeded normally, accompanied by strains of "I've got you under my skin". Very whimsicle when you realise that in this game, the objective is to float about in the bloodstream shooting germs.
You soon discover that by keeping the crosshairs of your germ gun on the black hole in the centre of the scren and then holding down the fire button you can kill 'em all. However, in other tubules that you are not patrolling, the bacteria are lurking and multiplying and the germ count zooms up. If you follow the right blood vessels you can enter the body organs but with this particular bod - it's difficult to tell if you're in his feet or his lungs.
To help you find your way about, so that you can rush to a particular organ when there's a "germ alert", the cassette inlay provides a map of all the body's major blood vessels. It's all in Latin and reminds one of an Italian underground system.
Eventually of course, the germs win and your host dies. This is perhaps not such a bad thing, as with these lungs, he didn't have long left anyway.