A-positive, a dialogical event created by Ed Bennett and myself, probes the delicate relationship between the human body and emerging new breeds of hybrid machines that incorporate biological elements and from these elements extract sensorial or metabolic functions. The work creates a situation in which a human being and a robot have direct physical contact via an intravenous needle connected to clear tubing and feed one another in a mutually nourishing relationship. To the new category of hybrid biological robots we ascribe the general epithet "biobots" . Because of its use of human red blood cells, the biobot created for A-positive is termed a "phlebot". Eduardo Kac