The Argentinian mammarenavirus genome is composed of two single-stranded RNA molecules, each encoding two different genes in an ambisense orientation. The two segments are termed 'short (S)' and 'long (L)' owing to their respective lengths.
In the Argentinian mammarenavirus genome, there are two single-stranded RNA segments that encode two different genes each. These segments are named 'short (S)' and 'long (L)' due to their differing lengths.