They are also positively chemotactic to the watery extract from archegonia.
Bruchmann[83] found that the spermatozoa of Lycopodium are positively chemotactic to citric acid and salts of this acid, although no citric acid could be shown in the contents of the archegonia.
An excellent illustration is the accumulation of leukocytes at the site of inflammation, owing to the positivelychemotactic influence of bacteria and their products.
As will be seen later, there are several varieties of leukocytes in normal blood, and many chemotactic agents attract only one variety and either repel or do not influence the others.
The really essential fact is that these special chemotactic forces are working in living protoplasm.
If we now ask why and by what mysterious law all these exact and elaborate choric movements take place Weismann and his school refer us to “chemotactic forces,” the nature of which is yet unknown.
Life is not the product or the slave of any chemotactic forces, but their maker and steersman.
Regarding the toxin itself as the chemotactic agent which attracts eosinophiles, its liberation in the lytic process and diffusion through the blood stream attracts the cells in question to the point at which it is being liberated.
Through chemotactic action, special cells capable of breaking up the toxin into harmless elements are attracted to the scene.
Depending on the chemical nature of the protein injected, a specific chemotactic reaction like eosinophilia may or may not occur.
The two most important works on chemotactic phenomena are Pfeffer, "Uber Chemotaktische Bewegungen," etc.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "chemotactic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
