And the next slide --that's the blank. Okay, this means that we're going to run a (video unavailable for the web presentation). It's going to be Penicillium first, spores and hyphae. By the way, there's a hologram exhibit of this in the Pfizer exhibit. These are the Pencillium's spores. If you love blue cheese and you look at that blueness of the cheese, that's what you're looking at, those spores. That's the way the organism reproduces. It's beautiful. Here you go, here's the hyphae (or vegetative growth) --I'm trying to focus it. This is a videotaping off of a phase contrast microscope. You can see the hyphae down here and its almost finger-like formations of these spores. The long finger-like or brush-like formations of spores is an absolute classical picture of Penicillium. There is a big glob of them over here. There is septation (cross walls) occurring, too, in the hyphal strands

(Video unavailable for the web presentation) - Baker's yeast. All right, this is Saccaromyces cerevisiae. By the way, you don't have to send away for these cultures. You walk into your grocery store, buy a package of dried yeast or yeast cake and then isolate them. This one happens to be Fleischman's. You've got some particles in here. These guys are floating and bouncing around due to browning motion (surface tension; not true motility). I always point out that these creatures are not motile. By the way, there is a daughter cell budding out. Budding is a common means of cell division for yeast. I didn't like that field so I moved to another one. They're normally immobile until I start moving around.

(Video unavailable for the web presentation) - This is our first look at a bacterium. Streptococcus pyogenes is the causative agent of strep throat. There it is as a chain. It's a chain of spheres. In the Pfizer exhibit there is a scanning electron micrograph of this organism that give this organism an appearance similar to a donut. The image given in this video is the real appearance of this creature. It's a long, long chain of spheres. There are some drifting along. I say drifting. It's kind of like wood in the flow of a river. They're moving all right, but not on their own speed. These guys do not have flagella to move themselves about. Okay, if you put the slide back up.

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