in this paper , we show that the steady state levels of the 9 s and 12 s mitochondrial ribosomal rnas ( rrnas ) are 30-fold lower in an early developmental stage in the mammal , the slender forms , relative to the levels in the stumpy trypanosomes , a later developmental stage in the mammalian infection .
C0035553
ribosomal
C0035701
rrnas