RT-PCR analysis of CD14, IL-15, IL-2, and control β-actin mRNA in GL from 4 LDGL patients. Lane 1, molecular weight marker (φ174 Hae-digested); lane 2, control PBMC stimulated for 12 hours with PHA (5 μg/mL) (positive control); lane 3, negative control (sample without cDNA); lanes 4 and 5, 2 CD3⁺ LDGL cases (cases no. 1 and 3 in Table 1); lanes 6 and 7, 2 CD3⁻ LDGL (cases no. 10 and 14 in Table 1); lanes 8 and 9, highly enriched GL from cases no. 1 and 14; lanes 10 and 11, enriched peripheral blood monocytes of cases no. 1 and no. 14.