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Full-Text Articles in Life Sciences
Blue-Green Algal (Cyanophyta) Toxins, Charles P. Mason
Blue-Green Algal (Cyanophyta) Toxins, Charles P. Mason
Journal of the Minnesota Academy of Science
In the past toxin production by blue-green algae has been demonstrated by feeding large quantities of algae to vertebrates and observing symptoms leading to animal death. It was the purpose of this investigation to develop a more convenient way to test for the presence of an alga toxin using instead of vertebrates, other algae and those organisms with which it lives and competes in fresh water habitats. Using axenic algae cultures and three different agar media MBL, DAA and NA, the latter to check for bacterial contamination, algae were streaked on the agar surface in petri dishes to form a …
A Method For Microbial Surface Sampling: Developing And Applications, Kathleen M. Keenan, Mary M. Halbert
A Method For Microbial Surface Sampling: Developing And Applications, Kathleen M. Keenan, Mary M. Halbert
Journal of the Minnesota Academy of Science
A method for assessing microbial contamination on surfaces is presented, and its development is discussed. Further, some applications in hospital and aerospace studies are described
Induced Fruiting In Myxobacteria, Walter Fluegel
Induced Fruiting In Myxobacteria, Walter Fluegel
Journal of the Minnesota Academy of Science
The fruiting myxobacteria and the cellular slime molds (Acrasiales) have many superficial resemblances with respect to fruiting behavior. Cells in the swarm are triggered by chemical substances to aggregate and form fruiting bodies (Bonner, 1947; Fluegel, 1963a). A chief difference between the two with respect to fruiting behavior, is that the myxoamoeba are free cells whereas the myxobacters are enmeshed in slime threads (Fluegel, 1963b). However, it is tacitly assumed that if parallel studies be undertaken in myxobacteria as has been done with the slime molds, the cells must be grown dispersed. Most isolates of myxobacteria do not grow dispersed; …
Circadian Organization And Microbiology: Variance Spectra And A Periodogram On Behavior Of Escherichia Coli Growing In Fluid Culture, Franz Halberg, Robert L. Conner
Circadian Organization And Microbiology: Variance Spectra And A Periodogram On Behavior Of Escherichia Coli Growing In Fluid Culture, Franz Halberg, Robert L. Conner
Journal of the Minnesota Academy of Science
Over three decades ago Rogers and Greenbank (1) published observations on intermittent growth in a bacterial culture. These interesting data are analyzed further in this report by computational procedures ( 2-8) designed for detecting and evaluating the significance of nearly periodic phenomena. By such methods, circadian (about 24-hour) periodicity in a culture of E. coli is unmasked as a significant component of the recorded changes. These results extend the already broad scope of circadian temporal organization in microbiology.
Molds And Bacteria In House Dust And Furniture Stuffing, Mary Ann Swaebly
Molds And Bacteria In House Dust And Furniture Stuffing, Mary Ann Swaebly
Journal of the Minnesota Academy of Science
No abstract provided.
Experimental Simulation Of Winter Anaerobiosis, Raymond L. Lindeman
Experimental Simulation Of Winter Anaerobiosis, Raymond L. Lindeman
Journal of the Minnesota Academy of Science
No abstract provided.
Nutritional Studies Of Protozoa, Alfred M. Elliott
Nutritional Studies Of Protozoa, Alfred M. Elliott
Journal of the Minnesota Academy of Science
No abstract provided.
Amoeba, External Parasites On Hydra, Wendel Luetmer
Amoeba, External Parasites On Hydra, Wendel Luetmer
Journal of the Minnesota Academy of Science
No abstract provided.
Some Impurities In Drinking Water, George Weitbrecht
Some Impurities In Drinking Water, George Weitbrecht
Journal of the Minnesota Academy of Science
The more we know about the causes of disease the more we are convinced that many of the ills that flesh is heir to come to us through germs that are transmitted through the air we breath, the water we drink and the food we eat. You are all familiar with the westward march of cholera among men and epizooty among animals. In surgical operations the danger is not from the operation, but from germs which are in the air and which get into the body through the wound, producing surgical fever, etc. Since Lester used the carbolic acid spray …