decreased RNA level substance absent from cell RNA absent from cell FYPO:0001889 2013-01-30T15:26:28Z A cell phenotype in which the amount of RNA measured in a cell is too low to detect. Total RNA or a specific RNA, such as the mRNA transcribed from a gene of interest, may be affected. undetectable cellular RNA level midori transcripts absent from cell RNA absent from cell absent ribonucleic acid