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. 1999 Nov 23;96(24):13874–13879. doi: 10.1073/pnas.96.24.13874

Figure 1.

Figure 1

Northern blot analysis of SOL1 expression in termite heads. Pseudergates (W) were exposed to JHA for 1 or 2 wk to induce differentiation into the soldier caste (PS, JHA-induced presoldier; S, soldier). Total RNAs from heads were resolved on denaturing agarose gels, blotted, and probed. (a) 18S and 28S rRNA bands stained with ethidium bromide indicate that approximately equal amounts of RNA were loaded in each blot. (b) Hybridization with the labeled SOL1 cDNA fragment. An arrow indicates the SOL1 transcript (≈1 kb), which was strongly expressed only in the soldier caste. Little or no expression was found in other castes, even during the course of differentiation.