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Table 2 Distribution of olfactory receptor genes in families and subfamilies

From: The dog and rat olfactory receptor repertoires

 

Number of classes

Number of families

Number of subfamilies

Human*

2

17

300

Mouse†

2

Nd

241

Dog

2

23‡

300

Rat

2

21

282

  1. *From [32]. †From [19]. ‡Note that this number of families is lower than that previously published [21]. This is probably because the published number was calculated from the alignment of the middle part of the sequences, which is more diverse, particularly for transmembrane domains TMIII and TMIV. Nd, not determined.