The effect of atrazine and of two newly synthesized derivatives of ditriazinil sulphides (4-chloro-4’,6-bis(ethylamino)-6’-isopropylamino-di- (s-triazinyl)-sulphide = CTS and ...4-chloro-4’,6-bis(isopropylamino)-6’- ethylamino-di-(s-triazinyl)-sulphide = CPS) on the development and changes of fresh and dry weight of Lemna gibba L. and Spirodela polyr- rhiza L. has been investigated.
It has been found that CTS considerably inhibits the growth and the increase of fresh and dry weight of the plants. Its inhibitory effect is, at least in the case of L. gibba stronger than the effect of atrazine (Figs. 1—8.). The results prove that with a higher concentration of the investigated active substances the increase in the number of plants is reduced while the morphological abnormalities become more and more frequent (Figs. 13.—16.).
Although the chemical structure of CPS is very similar to CTS its inhibitory effects is much weaker than that of CTS (Figs. 9.—12).
U stomatološkoj praksi smanjen je interes da se infektivni fo kusi na zubima povezuju s poremećenim općim zdravstvenim stanjem i/ili reumatološkim tegobama. Zbog toga je u ovome radu prikazano dvoje ...bolesnika u kojih se temeljitom obradom došlo do zaključka da je streptokokna afekacija zubi bila uzrokom znatnih reumatskih poteškoća. Iznosi se podatak da od ukupne množine reumatoloških bolesnika 10% otpada na reaktivni artritis koji se može povezati s latentnim ili manifestnim infektivnim zarišitem u organizmu uključujući u njih bolesne zube. Nove spozanje govore u prilog činjenici da se atralgije i/ili artritisi pojavljuju kao imunološki odgovor samo u predisponiranih bolesnika, pri čemu je važno postojanje HLA B-27
antigena. Utvrđeno je da streptokoki skupine A i G mogu izazvati porast antistreptolizinskog titra (AST), a infekcija stafilokokima
porast antistafilolizinskog titra (ASTA). Ako se isključe drugi fo kusi,
takav imunološki odgovor organizma upućuje na mogućnost da postoji granulom zuba. U tome slučaju sanacija zuba može imati povoljan učinak.
In addition to normal forms of embryoids in an embryogenic callus of pumpkin, various abnormal forms also appear. They can be characterized, according to their morphology, as monocotyleous, ...heterocotyleous, tricotyleous, quadricotyleous, syncotyleous, and embryoids with leaf-like cotyledons.
Other forms observed include: twins, forms with undeveloped roots, undeveloped hypocotyls, callus formed on the surface of the plantlet, multiple growth and forms of undifferentiated masses. The anomalies described, with the exception of certain differences in the size of the embryoids are not dependent on the presence of a specific growth substances in the nutrient medium.
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