The time occupied in the bactericidalaction depends upon the heat of the sun and the intrinsic vitality of the organism.
That here there are various influences of a bactericidal nature at work in defence of the individual.
Sunlight, thebactericidal power of which is well known, had, as would be expected, no effect except upon the bacteria directly exposed to its rays.
Hewlett and Thomson graphically demonstrated the bactericidal power of the nasal mucous membrane by noting the early removal of Bacillus prodigiosus, which had been purposely placed on the healthy Schneiderian membrane of the nose.
On the whole, however, authorities agree that the influence of the sun's rays upon water is distinctly bactericidal and causes a marked diminution in the quantity of organisms after acting for some hours.
It is obvious that a very large number of modifications are possible of these two simple devices for testing the bactericidal power of chemical substances.
The ciliated epithelium, the moist mucus, and the bactericidal influence of the wandering or "phagocyte" cells probably all contribute to their final removal.
To the bactericidal effect of sunlight is equally to be attributed the absence of bacteria from the High Alps.
By analogy one might expect to find bacteria secreting specific substances which would tend to counteract the destructive action of the phagocytes and bactericidal substances.
The discovery of the possibility of producing a strongly bactericidal serum in the manner above described aroused the hope that such sera would prove of great value in passive immunization and serum treatment of bacterial diseases.
Hence Ehrlich suggested the use of apes for preparing bactericidalsera for human beings.
A typhoid bactericidal serum has also some dissolving effect on colon bacilli, etc.
The serum of the susceptible rabbit, for example, is bactericidal to this organism, whilst the serum of the immune dog is not.
He also showed that the bactericidal action takes place in the absence of food materials, thus proving that it is not merely a poisoning effect of the altered medium.
The recent application of the action of bactericidal rays to the cure of lupus is, however, an extension of the same discovery.
The blood serum has a direct bactericidal action on certain bacteria, as tested outside the body, and this also varies in different animals.
The observations of Downes and Blunt in 1877 left it uncertain whether thebactericidal effects in broth cultures exposed to solar rays were due to thermal action or not.
It is quite evident that bactericidal action as tested in vitro outside the body does not correspond to the degree of immunity possessed by the animal under natural conditions.
The lower area of bactericidal action extends much farther to the right, because the quartz allows more ultra-violet rays to pass than does glass.
Not one of the eulogistic reporters and exploiters seems to have considered it worth while to determine by the simplest control experiments whether the drug possesses any bactericidal or antiseptic powers whatever.
For this reason their antiseptic and bactericidal effect is much more intensive than with medicaments which contain only its emanation, which disappears in a short time.
Ellis, Edward Keith: The Bactericidal Values of Some Widely Advertised Antiseptics, The Journal A.
There is nothing in this product which possesses these bactericidal powers.
It is generally known that radium, even if externally employed, has proved itself to be a bactericidal remedy.
Metchnikoff used other experiments to prove that the bactericidal property of blood juices did not exist without intervention from the phagocytes.
To Behring, who affirmed that immunity was due to the bactericidal power of the serum, he replied by a series of experiments on the anthrax of rats.
When the stagnant fluid is got rid of by laparotomy, the parts are immediately douched with lymph charged with protective substances, the bactericidal power of which may be many times that of the fluid displaced.
In the case of caseated glands in the neck, for example, it is obvious that the removal of this inert material is necessary before the tissues can be irrigated with fluids of high bactericidal value.
One of the obstacles to this is that the focus is often surrounded by tissues or fluids which have been almost entirely deprived of bactericidal substances.
Numerous investigations have been also made to determine whether all the rays of the spectrum are equally responsible for the bactericidal action of light.
Radiant energy possesses advantages which are unequaled by other bactericidal agents, in that it does not contaminate or change the properties of the water in any way.
From the great amount of data available it appears reasonable to conclude that radiant energy is a powerful bactericidal agency but that the action is due chiefly to ultra-violet rays.
The foregoing remarks about the bactericidalaction of radiant energy apply only to bacteria in water, in cultures, and on the surface of the body.
The ultra-violet rays emitted by the small electric filament lamps used in these cabinets are of very low intensity and the bactericidal action of the light must be feeble.
There is a vast amount of testimony which proves the bactericidal action of light.
That intestinal irrigation with a Silvol solution containing 10 to 15 grains to the pint is sufficiently bactericidal to “be used in the abortive treatment of such infectious processes as dysentery, cholera infantum, and colitis.
As regards the relation of pancreatic fluid to bactericidal availability of Trimethol, there is little to say, other than that the published statements in the advertising accompanying the packages make no mention of this point.
Strong Activity--Extensive bacteriological investigations on many pathogenic organisms, conducted in the Lederle Laboratories of New York, prove conclusively the high bactericidal value of Ziratol in extremely dilute solutions.
The claim that Iodeol and Iodagol have the antiseptic and bactericidal action of free iodin lacks proof and must be considered unwarranted and misleading in the extreme.
Antiseptic andbactericidal effects are easily estimated by laboratory methods.
This experiment indicates the amount of chlorine that is required for the bactericidal action only; such a dosage could never be used in practice to meet a pollution of this degree because of the accompanying organic matter.
Lode noted that organic matter lowered the bactericidal activity of chlorine and recommended the use of 30 p.
Since the secretion of alexin is connected with the presence of leucocytes, the hypoleucocytosis due to the venom is sufficient to explain the loss of bactericidal power.
But it is impossible to conclude, from the diminution of bactericidal power in this experiment, that the alexin becomes fixed by the venom.
It follows that blood collected a short time after the injection may be totally bereft of its bactericidal power, in consequence of the disappearance of the leucocytes, which have migrated into the organs.
Welch and Ewing, referring to these phenomena of rapid putrefaction in cases of death from venom, explained them as being due to the loss of the bactericidal power of the serum.
The strongly saline taste of pickled meat or salted butter appears gradually to have become repugnant to a large part of mankind, and other preservatives have come into use, possessing greater bactericidal power and less taste.
The use of sugar as a preservative depends upon the fact that, although in a dilute solution it is highly prone to fermentation and other decomposition, it possesses bactericidal properties when in the form of a concentrated syrup.
Similarly, the almost universal presence of glucosides containing bactericidal constituents in the bark of trees insures natural antiseptic conditions for all wounds of the outer surfaces of the stem of the plant.
In Calmette's view the function of the visite domiciliaire was an outgrowth of his bacteriological training and his bactericidalplan for treating tuberculosis.
They made a series of observations on the bactericidal action of various salts of mercury, the bichloride, the bibromide, and the bicyanide, on the spores of Bacillus anthracis.
Paul and Kroenig have shown that the bactericidal action of different salts also varies with their degree of dissociation, i.
What is true of the bactericidal action of the salts of mercury is equally true of their therapeutic effect.
These experiments have also shown that the bactericidal power of blood-serum against typhoid bacteria was less in the case of drinkers than in that of abstainers.
The bactericidal power of blood-serum from both alcohol-drinking and non-drinking persons was determined by some experiments.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "bactericidal" in a variety of sentences. We hope that you will now be able to make sentences using this word.
