Table 2.

2 × 2 Table Demonstrating the Association R264 or K264 with either M268 or L268 in All Sequences Derived from Time Points Where a Mixture of Clones Expressing either R264 or K264 Were Found

Clones	R264	K264	Total
L268	27	0	27
M268	32	81	113
Total clones	59	81	140

Fisher's exact P value < 0.0001. Time points used in this analysis were: 777, 1.0, 1.3, and 2.4 yr; 007, 12.7, 12.8, 12.9,14.5, 15.0, 15.2, and 15.4 yr; SW, 1.1 yr.