FIG. 2.

Signal intensity values of probe-target duplexes representing rRNA extracted from estuarine sediment samples. (A) High-salinity site (n = 8). (B) Low-salinity site (n = 6). Probe names are listed in Table 1. Each probe was spotted in duplicate on the microarray. Error bars indicate the standard deviations from the means of quadruplicate (high-salinity site) or triplicate (low-salinity site) experiments. Experimental error represents the variability obtained using two different microarrays and rRNA extracted, fragmented, and labeled from one low-salinity-site or two high-salinity-site sediment samples. A.U., arbitrary units.