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Table 1 Number of elements and functional sub-regions contained in HERVgDB4 (left) and designed on HERV-V3 (right) where one probeset is defined by sub-region

From: A comprehensive hybridization model allows whole HERV transcriptome profiling using high density microarray

Repertoire HERVgDB4 (database) HERV-V3 (array)
Number of elements Number of sub-regions Number of elements Number of probesets Number of elements
HERV prototypes 29,859 90,106 29,807 45,374 29,859
HERV centromeric 192 589 24 29 192
HERV Dfam 169,821 342,482 154,535 283,641 169,821
MaLR Dfam 228,429 45,543 179,323 311,286 22,8429
LINE1 1072 4627 664 1416 1072
lncRNA 3812 3819 3777 3777 3812
Viruses 291 386 289 368 2044
gPEHM 1559 1559 1559 1559 8743
gU133 1559 NA 1559 3884 42,964
gHTA 1559 NA 1559 35,398 344,002
Affymetrix Controls NA NA NA 177 20,895
Total 435,040 898,998 372,976 686,869 2,651,585
  1. The discrepancy between the number of elements in the database and on the array is due to cross-hybridizing elements discarded during the design