Think: PRIMAry cause
Here is another one. Want to know an easy way of remembering what viruses are non-enveloped?
Well, non-enveloped viruses are naked, crudely speaking.
Try this mnemonic, may turn out helpful:
One must be naked for PAP smear and PCR
DNA Viruses (PAP)
RNA Viruses (PCR)
- Picorna virus