FIG. 4.
Alignment of HCMV short arm terminal sequences. HCMV strain AD169 short arm terminal sequences ending in a c sequence are aligned with strain AD169 and Towne short arm terminal sequences ending in an a sequence (7, 26). Vertical lines indicate identical bases, dots indicate gaps added to improve alignments, and brackets indicate the putative cryptic elements pac2a and pac2c. Dashed boxes indicate the two blocks of conservation, and the solid box indicates sequences similar to CGCGGCG motifs (on the complementary strand).