*'''Aa''' - A blood group found in horses of clinical significance. Aa positive foals born to an Aa negative mare could suffer from equine neonatal isoerythrolysis
*'''Aa''' - A blood group found in horses of clinical significance. Aa positive foals born to an Aa negative mare could suffer from equine neonatal isoerythrolysis
+
*'''Absorption of antibodies''' - removal of cross-reacting antibodies through incubation of antibodies with their cross-reacting antigens followed by seperation of the formed antigen-antibody complexes. The removal of cross-reacting antibodies is performed using high molecular carriers, as this allows for easier removal of the formed antigen-antibody complexes
*'''Acantholysis''' - loss of cohesion between cells of living epidermis, especially stratum spinosum
*'''Acantholysis''' - loss of cohesion between cells of living epidermis, especially stratum spinosum
*'''Acanthosis''' - hyperplasia of stratum spinosum
*'''Acanthosis''' - hyperplasia of stratum spinosum