A therapeutic or prophylactic agent for cancer is disclosed which damages the membrane and kills cancer cells, in particular of the blood-forming system, having membrane protein aggregates which contain several core histones or largely core-like histones andor their parts. The techniques may produce robust template matching results in situations of lighting unevenness, even with stronger occluding objects. Another embodiment includes a MEMS optical apparatus comprising an optical element capable of motion in two degrees of freedom.