FIG. 1.

RT-PCR of cDNA from mucosal tissues. RNA samples from pooled lung and salivary gland and three ocular mucosal tissues derived from four individual donors were reverse transcribed, amplified, electrophoresed, and labeled with ethidium bromide. A 193-bp fragment was amplified from the cDNA of the lung (lane 1), two conjunctivae (lanes 2 and 3), the lacrimal gland (lane 4), the cornea (lane 5), and the salivary gland (lane 6). Lane 7 is a negative control lacking any target cDNA. The arrow indicates the 200-bp standard.