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Fig. 2. Developmental regulation and cell type expression of dimB
RNA. Cells were developed on agar for the times indicated (hours) and RNA
was harvested. After reverse transcription, levels of each transcript were
determined by quantitative PCR and normalized to IG7. (A) Developmental
regulation of dimB compared with dimA. Expression of the two
genes is upregulated during development. (B) RNA from prespore and
prestalk cells was analyzed by quantitative RT-PCR with oligonucleotides
specific to the dimB mRNA, indicating expression in both cell types
with some prespore enrichment. Primers against prestalk (ecmA) and
prespore (cotB) specific genes were used as controls. Expression
levels are given in arbitrary units.