…one’s thoughts turn to frivolity rather than virology, but hold! – one must always be serious. Therefore – a competition!! And Happy New Year, BTW.
So: what do the following particles have in common? A three-part answer, this; the first fairly easy, the second more difficult, and the third quite obscure. The winner will, as previously, get to write a guest blog for ViroBlogy!! Dorian, limber up there. Varsani, you’re disqualified, so too anyone from my lab – unless well disguised. *
Hint 1: yes, they are
Hint 2: you could catch them together?
Hint 3: strange as it may seem, these are identical.
I hope this is sufficiently obscure? Have fun, won’t you.
* = this qualifies as Hint 4.

