In reference to what you said about MRSA not going away... almost all pseudomonases are like that (mucoid or non). They can't really get kicked out, just sort of get kicked back into the corner.
And it's basically what folione said. Mucoid has a biofilm that makes it harder to get at via antibiotics (abx). It basically protects itself more carefully (thus, making it more difficult) than non-mucoid does.
It's raining outside. Think of the rain drops as abx. The non-mucoid is someone out in the rain, no protection. The mucoid is someone out in the rain with a rain coat and a big umbrella. Not quite that simple, but that's the idea.
As for the pictures, here's the link to that thread:
<a target=_blank class=ftalternatingbarlinklarge href="http://forums.cysticfibrosis.com/messageview.cfm?catid=5&threadid=26626&highlight_key=y">http://forums.cysticfibrosis.c...=26626&highlight_key=y</a>