Fig. 4.

Restriction map of the human PVR gene and multiple splicing of its transcript. Structures of mRNAs for hPVRα, hPVRβ, and hPVRγ are shown by open (untranslated sequences) and shaded (translated sequences) boxes. Numbers of exons are indicated at the top of the figure. Receptor regions are connected by thin lines to exons contained on a gene map shown underneath. Restriction cleavage sites of BamHI and HindIII are indicated by vertical bars with closed circles and open boxes, respectively. Sequences of the human PVR gene cloned into cosmids HC3 and HC5 are indicated by bars. A scale for length of nucleotides of the PVR gene is shown by bar with arrowheads at both ends at the bottom of the figure. (quoted from ref. 2).