In 1883 Elie Metschnikoff published his researches on the intracellular digestion of invertebrates (Arbeiten a.
Movement of living matter, whether of cells or of intracellular substance, is another important factor (O.
Many of them, probably also of proteid nature, are much more resistant to heat; thus the intracellular toxins of the tubercle bacillus retain certain of their effects even after exposure to 100° C.
With regard to the nature of intracellular toxins, there is even greater difficulty in the investigation and still less is known.
Methods have been introduced for the purpose of breaking up the bodies of bacteria and setting free the intracellular toxins.
We may obtain {65} cells imitating all the natural tissues, cells without a membranous envelope, cells with thick walls adhering to one another, or cells with wide intracellular spaces.
From a knowledge of the osmotic pressure of the intracellular liquid of the roots, we may calculate the height to which the sap can be raised in the trunk of a tree, i.
The aspiration of the water from the soil is due to the intracellular osmotic pressure in the roots, which causes the sap to rise in the stem of a plant as it would in the tube of a manometer.
The plumpness of a child and the turgescence of young cells are but the expression of high osmotic tension, while relaxation and flaccidity of the tissues in old age betrays the fall of osmotic pressure in the intracellular tissues.
Meyer, and many others demonstrated that in nearly all plant tissues the cell-walls are connected by intracellular bridges.
Harrison found, in 1908, that in frogs the nerve-fibres develop out of these intracellular bridges.
Certain aspects of the histochemistry and metabolic significance of the intracellular bodies (bacteroids) of cockroaches (Blattariae).
Isolation of the intracellular symbiont of the roach.
The effect of penicillin and certain sulfa drugs on the intracellular bacteroids of the cockroach.
Debaisieux found intracellular stages of Peltomyces periplanetae that have not been found in Plistophora periplanetae or Coelosporidium periplanetae.
The "intracellular symbionts" of some Blattidae, their nature and behavior.
The intracellular "symbionts" and the "rickettsiae.
The morphology and behavior of the intracellular bacteroids of roaches.
The intracellular bacteria of the cockroach in relation to symbiosis.
A study of the intracellular symbionts in the fat body of Blatella germanica Linn.
Yarwood, 1937): This intracellular parasite was found in the fat body in light infestations.
Obviously, the intracellular symbiotes subserve the normal nutrition of the cockroach.
Growth of theintracellular symbionts of the cockroach, Periplaneta americana.
The necessity forintracellular bacteroids (symbiotes) in growth and reproduction of cockroaches (Blattariae).
Nephridia generally paired, often very numerous in each segment, in the form of long, much-coiled tubes with intracellular lumen.
Externally, the nephridium opens by a straight part of the tube, which is often very wide, and here the intracellular lumen becomes intercellular.
The nephridia in this group are invariably coiled tubes with an intracellular lumen and nearly invariably open into the coelom by a funnel.
Oligochaeta and Hirudinea in that the coiled glandular tube has an intracellular duct which is ciliated in the same way in parts.
Poisons present in the bodies of the bacillus = Intracellular bacterial poisons.
Hence those having a similar intracellular poison are antagonistic to each other, each member of such a group being unable to live in an environment of its own intracellular poison.
Klein has pointed out, a poisonous constituent or constituents included in the body protoplasm of the bacillus, and which he therefore terms the intracellular poison.
Jute contains in its raw state a considerable amount of colouring matter andintracellular substance.
Gregarina); or lastly, in a few forms, the early development is entirely intracellular (e.
Monocystis) of the earthworm, which is for a time intracellularin the spermatoblasts (fig.
The parasite may remain only attached to the host-cell, never becoming actually intracellular (e.
Schizogony very exceptional, only occurring during the intracellular phase, if at all.
Sometimes the young cells appear to have no nuclei, as in the intracellular brood of chorda cells, but, as a rule, a nucleus is clearly visible.
Furthermore, a variety of physiological and ecological adaptations might enable the biota to survive the low nighttime temperatures and intracellular ice crystallization.
Altered fluid equilibrium in buoyant states is accompanied by shifts in intracellular and extracellular electrolyte distribution, especially sodium and potassium.
Many animals with intracellularluminescence have quite complicated luminous organs.
We do know that the light is intracellular and that filtration of the bacteria from their culture medium gives a dark sterile filtrate absolutely free from any luminous secretion.
He saw a confirmation of this in the fact that primitive adult animals also have no digestive cavity but merely an intracellular digestion (sponges, turbellaria).
As to antitoxic immunity, it is very probably due to theintracellular digestion of toxins by the different macrophages.
Intracellular digestion by phagocytes is accomplished by means of digestive ferments, similar to those of our own digestive organs.
From the initial question of intracellular digestion he had reached the most exalted problems which can occupy our minds, the harmonising of human discords through knowledge and will.
Therefore, in the natural immunity of unicellular beings, two fundamental elements may already be observed: sensitiveness and intracellular digestion.
Having established the fact of intracellular digestion in lower animals, he extended it to certain cells of the higher animals; thus his phagocyte theory was born.
In intracellular digestion, the diastases digest within the cells, whereas in extracellular digestion the phenomenon takes place outside the cells, in the cavity of the gastro-intestinal tube.
Metchnikoff continued to study intracellulardigestion and the origin of the intestine.
While studying the genealogy of beings, Metchnikoff continued his researches on intracellular digestion.
For our present knowledge of the power of intracellular digestion possessed by the endoderm cells of the lower invertebrates removes all difficulties both as to the mode of entrance of the algæ, and its fate when dead.
Hence the immunity is due to this increased intracellular digestion.
Milder cases of tuberculosis give more vigorous reactions because the intracellular enzymes are not used up rapidly enough since the products of the bacillus are secreted slowly in such cases.
If a third dose is given, the cells adapt themselves to this increased intracellulardigestion and it thus becomes normal to them.
Metchnikoff at first thought that this engulfing and subsequentintracellular digestion of the microoerganisms were sufficient to protect the body from infection.
These cells give rise to an internal parenchyma, which carries on an intracellular digestion.
Lankester, "On theintracellular digestion and endoderm of Limnocodium," Quart.
It may be noted that an intracellular protozoon type of digestion persists in the Porifera, and appears also to occur in many Coelenterata, Turbellaria, &c.
These intracellular forms multiply by ordinary fission in the cells of the Malpighian tubules and gonads.
But most other plant enzymes are intracellular in type.
With one or two possible exceptions, they are invariably intracellular during the entire trophic life of the individual.
It is generally believed that the cell material has a semi-fluid or gelatinous consistency and is contained within an intracellular meshwork.
It must constantly receive from the outside a supply of energy in the form of food, and substances formed as the result of the intracellular chemical activity must be removed.
Many amoebæ show also in the interior a small clear space, the contractile vesicle which alternately contracts and expands, through which action the movement of the intracellular fluid is facilitated and waste products removed.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "intracellular" in a variety of sentences. We hope that you will now be able to make sentences using this word.
