In Article <Pine.3.89.9601060359.J20549-0100000 at mistral.ERE.UMontreal.CA>,
ferlandl at ERE.UMontreal.CA ("Ferland Louis H.") wrote:
>On 5 Jan 1996, Robert Horton wrote:
[snip]
>
>FERLAND
>...the added complexity of which rules out "top and bottom", doesn't it?
...particularly in the case of single stranded viruses.