Determination of the Osmotic Resistance Changes in Mouse Spermatozoa Using the Classic Osmotic Resistance Test, Short Osmotic Resistance Test and Modified Short Osmotic Resistance Test

Evaluating the Functional Status of Spermatozoa in Smokers Using Hypo-osmotic Swelling Test

Osmotic resistance of heat-damaged erythrocytes.

Whole blood was heated for twenty minutes at 40 degrees C., 45 degrees C., 50 degrees C., and 55 degrees C. Changes in the osmotic resistance of the heat-exposed cells were then determined. The values obtained were plotted as lysis increments. This treatment revealed groups of cells of varying heat sensitivity. After heating to 50 degrees C., cell groups were therefore prepared by partitioning ...

Determination of bacterial antibiotic resistance based on osmotic shock response.

We investigate the buoyant mass of bacterial cells in real time with the suspended microchannel resonator (SMR) as the population recovers from an osmotic shock. The density of the culture medium is chosen such that the bacteria initially have a positive buoyant mass which becomes negative as they recover from the hyperosmotic stress. This behavior can be used to differentiate between an antibi...

The relative osmotic resistance of chronic lymphocytic leukemia lymphocytes.

By DAVID \V. \\ESTRING AND SUZANNE B. BnrrrlN T lIE HEMOLYTIC RESPONSE of erythrocytes to hypotonic stress is well known. Complex enzyme systems are required by the cell to maintam membrane integrity during exposure to hypotonic solutions. When certain of these enzymes are defective, erythrocyte osmotic fragility may be altered.3 On the other hand, the response of leukocytes to osmotic stress h...

Mechanisms of Drought Resistance in Grain Legumes I: Osmotic Adjustment

When crops are exposed to drought there is commonly an increase in solute-pool of the plant tissue. A series of experiments were conducted in 1994 and 1995 in the University of Hohenheim, Germany, to evaluate whether drought-induced solute accumulation per se will improve drought resistance, to determine the species of active osmotica involved, and to identify alternative mechanisms in grain le...