Part 2
by Christoph
In part 1, I looked at Bifidobacterium bifidum to see if the occasionally observed Y-shape of these bacteria gives any hint on their mode of cell division ─ maybe longitudinal division? No, there is no tang...
by Hans H. Martin
Figure 1. Isolated peptidoglycan sacculi of Aquaspirillum serpens
In my retirement, one topic that continues to interest me is the 3D-structure of murein (i.e., peptidogylcan, as is now generally preferred in the ...
by Elio
Figure 1. Electronmicroscopy of T. whipplei cultured in HEL cell monolayers. Transmission electronmicroscopy of two extracellular T. whipplei cells, of which one is dividing. Bar, 100 nm. Source
Whipple’s disease is both ...
by Elio
Thin-section composite showing cell spacer plugs (A) and an end plug (B). P, Plug; S, sheath; W, cell wall; AM, amorphous matrix. Bars = 100 nm. Source.
Terry Beveridge of Guelph University died recently. We regret the loss...
by Christoph
Figure 1. Scanning electronmicroscopy (SEM) of Gordonia amarae CON44T (top) and Gordonia pseudoamarae CON9T (bottom) after co‑culture with M. amalyticus. Yellow and red boxes represent the area shown in the zoomed ...
by George O'Toole
I have studied bacterial biofilms since I joined Roberto Kolter's lab at Harvard Medical School in 1995. I "discovered" biofilms as I was finishing my graduate work at Wisconsin and continued tracking the literature...
by Elio and Roberto
As we speak, biofilms are the rage in microbiology. And why not, being that most bacteria in nature are not free-swimming but are attached to some surface. Model systems for biofilms are therefore sorely ne...
by Christoph
Restriction enzyme Hae III digest of E. coli MRE600 DNA separated by electrophoresis on 2% agarose gel. DNA was then transferred to cellulose nitrate and hybridized with 32P-labelled RNA. A and D Ethidium bromide fluores...
by Christoph
Figure 1. The four interconnected QS systems of P. aeruginosa. Autoinducer synthases, LasI, RhlI, PqsABCDH and AmbBCDE, produce the autoinducers, 3-oxo-C12-HSL, C4-HSL, PQS and IQS, respectively. 3-oxo-C12-HSL, C4-H...
by Elio
Figure 1. Fossilised bacteria within Mono Lake tufa chimneys. (a) Multiple type 1 filaments. (b) Cluster of approximately aligned segmented type 2 filaments. (c) Type 1 filaments aligned perpendicular to outward‐radiatin...