Table 6.

Distribution of SIDER retroposons among differentially expressed Leishmania spp. transcripts.

	Differentially Expressed Transcriptsa			Genomic Distributionb
Species	Life Stage	SIDER1%	SIDER2%	SIDER1%	SIDER2%
L. major	amastigote	23.9	18.3	11.6	15.0
	promastigote	10.6	11.6
L. infantum	amastigote	14.1	11.9	9.4	15.8
	promastigote	8.4	12.4

^a As determined by the DNA microarray experiments (this study).

^b Refined species-specific hidden Markov model profiles were used to determine the genomic distribution of two SIDER families in L. infantum and L. major ([46]; Smith et al. unpublished)). Values represent the proportion of annotated coding sequences that potentially harbor at least one SIDER element in their 3'UTR. The percentage of SIDERs in differentially expressed transcripts is compared with the genomic distribution of SIDERs.