Genes upregulated 36 and 40 hpi in liver stages relative to blood stages.

The rank indicates the results from two independent cDNA subtraction experiments. Genes described as “hypothetical” are not listed. The rank is derived from comparing levels in P. yoelii asexual stages to liver stages and is calculated only for genes of at least six probes and changing more than 3-fold within the examined conditions (54 for 3,450 P. falciparum and P. yoelii gene pairs total). Genes listed “sporozoite” are highly expressed in salivary gland sporozoites, and their continued detection may be the result of some sporozoites failing to develop, or may indicate that there is a continued need for the gene product in the liver, potentially because the product is involved in immune response modulation.