Figure 4.

Composition of the salmon maturation and smoltification cDNA microarray. The array is described on the basis of the clone origin: (a) by tissue type, (b) by developmental stage and project source, and (c) by tissue library related to sexual maturation. Most clones originate from salmon SSH libraries related to sexual maturation and parr-smolt transformation, however 576 clones are of rainbow trout origin and relate to confinement stress in liver, brain and pituitary (European Union-funded STRESSGENES project, http://www.irisa.fr/stressgenes/), undifferentiated gonad and stimulated head kidney leucocytes (both included under 'Other'). A number of clones are also from unselected salmon full-length cDNA libraries of testis, ovary, spleen and liver (European Union-funded SALGENE project). Further details are given in Materials and Methods.