“…ZII is not, however, the only antigen that reveals parasagittal bands in the cerebellar cortex. Over 20 different molecules yield a striped pattern in mammalian cerebella including 5 0 -nucleotidase (Scott, 1963), acetylcholinesterase (Marani and Voogd, 1977), corticotropin-releasing factor (King et al, 1997), heat shock protein 25 (Armstrong et al, 2001), human natural killer cell antigen (Eisenman and Hawkes, 1993;Marzban et al, 2004) cadherins (Arndt and Redies, 1998;Vanhalst et al, 2005;Neudert and Redies, 2008) and phospholipase Cb4 (PLCb4, Sarna et al, 2006;Marzban et al, 2007). In order to gain a better understanding of how the cerebellar cortex is organized in birds as well as the correspondence between ZII and other antigens, we also examined the pattern of PLCb4 labeling throughout the hummingbird cerebellum.…”