Nucleic Acid Hybridization 4 Sensitivity and Specificity 4 article 4 nonhuman 4 DNA library 3 DNA sequence 3 DNA, Complementary 3 EST 3 Expressed Sequence Tags 3 Flowers 3 Gene Expression Profiling 3 Gene Expression Regulation, Developmental 3 Gene Expression Regulation, Plant 3 Gene Library 3 Helianthus 3 Helianthus annuus 3 Organ-specific transcripts 3 Plant Leaves 3 Plant Roots 3 Plant Stems 3 RNA 3 Reproducibility of Results 3 SSH 3 Sequence Analysis, DNA 3 Sunflower 3 agronomic trait 3 breeding 3 chemistry 3 comparative study 3 complementary DNA 3