Abstract
After RNA extraction from horsehair shafts and roots, the mRNAs of β-actin, muscle-type phosphofructokinase, and transforming growth factor-β1 were detected by reverse transcription polymerase chain reaction assay. Low amounts of RNA were present in the horsehair. These specific mRNA transcripts were readily detected when more than three hair roots were used. However, detection of the mRNA transcripts was difficult in the hair shaft. These findings indicate that the small amounts of residual RNA in horsehair roots can be utilized as samples for molecular biological analysis.
