Use of RNAlater® as a preservation method for parasitic coprology studies in wild-living chimpanzees

Examples of parasite elements (protozoa cysts and helminth eggs) observed in chimpanzee faecal samples preserved in RNAlater® at −80 °C. A: Entamoeba sp. cyst (scale bar indicates 10 μm) B: Trichuris egg (scale bar indicates 50 μm) C: strongylid egg (scale bar indicates 50 μm).