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Transient Tapetum-Specific Expression of PKSA and PKSB.
PKSA and PKSB mRNAs were localized by in situ hybridization to sections taken from developing anthers of wild-type (Col-0) flowers using gene-specific antisense probes for PKSA and PKSB and control sense probes. Stages of anther development are according to Sanders et al. (1999). Dark precipitates indicate hybridization of the probe. MC, meiotic cell; T, tapetum; Tds, tetrads; Msp, microspores; PG, pollen grain. Bars = 70 μm.
