RIC values. (a) RIC12 values for 28-bp segments from genomic regions containing Jλ gene segments. RIC12 values are given on the y-axis, and position in the sequence is shown on the x-axis. Each blue or red point represents the RIC12 for the 28-bp segment beginning at that position. Points corresponding to physiologic RSS are red. The horizontal black line indicates RIC = -40. (b) RIC23 values for 39-bp segments from genomic regions containing Vβ gene segments. The horizontal black line indicates RIC = -60. Other details as in (a).