A comprehensive transcript index of the human genome generated using microarrays and computational approaches

Table 3 Summary of transcription activity detected from the chromosome 20 and 22 genome tiling data

Locus projection categories	Sanger tiling chromosome 20	Non-Sanger tiling chromosome 20	Sanger tiling chromosome 22	Non-Sanger tiling chromosome 22
Total Sanger genes	1,278		933
Sanger category 1	577 (398)		368 (184)
Sanger category 2	155 (32)		121 (60)
Sanger category 3	338 (150)		144 (52)
Sanger category 4	161 (117)		294 (138)
RefSeq		3		0
Ab initio + expressed sequence + protein		1		0
Ab initio + expressed sequence		15		8
Ab initio + protein		6		4
Expressed sequence + protein		4		1
Ab initio		71		26
protein		11		21
Expressed sequence		80		46
Outside all annotations*		1,936		1,058
High-confidence categories	NA	25	NA	12
All annotation categories	1,231 (697)	191	927 (434)	106

*Number of probes detected as components of EVGs. Columns 1 and 3 provide the number of Sanger genes represented on the genome tiling arrays for chromosomes 20 and 22, respectively, with the number of genes detected given in parentheses. Columns 2 and 4 provide the number of LPs not overlapping Sanger genes that were detected on chromosomes 20 and 22, respectively. NA, not applicable.

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