Apparatus (10) for the automatic staining of tissue includes a body (12) on which a carousel (16) rotates. The carousel (16) is able to carry a number of slides (24) bearing tissue samples. A delivery head assembly (18) is mounted on the body (12) for movement across the diameter of the carousel (16)....http://www.google.com/patents/US5425918?utm_source=gb-gplus-sharePatent US5425918 - Apparatus for automatic tissue staining for immunohistochemistry
