Abstract: There is disclosed micro-processor controlled bio-fluid assay apparatus wherein microtitre plates are on carriers having machine readable labels and wherein the samples of bio-fluid and reagent dispensers also preferably carry machine readable labels whereby the micro-processors which controls movement of the plates through the apparatus can verify correct operation thereof. Movement of the plates is effected by a plate carrier transfer mechanism which has the ability to move the plate carriers in any order and in either direction along each of the x,y and z axes.

Abstract: A method and apparatus for measuring cell adhesion with each other or with surfaces wherein a fluid containing a suspension of the cells is accelerated from a first velocity lower than a second velocity whilst flowing through a measuring chamber a surface of which constitutes a substratum to which adhesion of the cells is to be measured, and the distance along the substratum to which the cells adhere for a known initial flow rate is measured.