Additional file 1: of Tissue and cell-specific transcriptomes in cotton reveal the subtleties of gene regulation underlying the diversity of plant secondary cell walls MacMillanColleen BirkeHannah ChuahAaron BrillElizabeth TsujiYukiko RalphJohn DennisElizabeth LlewellynDanny PettolinoFilomena 2017 Cotton stem pith and xylem used in RNA extraction for deep-sequencing. (PDF 193 kb)