At the heart, it’s about blood. With Cronenberg, it’s always about blood. No other director of his stature has built a career out of such a fascination with blood, and the other assorted slick bodily fluids that course through Cronenberg’s filmography. What makes him unique, and apart from the average gorehound, is his coldly clinical presentation of the warm organic matters that make up life, and the deeper truths he uses them, slyly, as an…