A substance which inhibits brain formation in decapitated regenerating planarians (Dugesia etrusca) was characterized and partially purified. The substance's inhibitory activity was followed during each purification procedure by adding freshly decapitated animals of a standard size to each fraction, and later measuring the resultant regenerated brain volume. The inhibitory activity remained in ...

ABSTRACT Tomato race 3 (T3) strains of Xanthomonas campestris pv. vesicatoria are antagonistic in vitro to tomato race 1 (T1) strains of the bacterium. All T1 strains and 11 strains of other X. campestris pathovars tested were inhibited by T3 strains. Sensitivity of tomato race 2 (T2) strains was variable. No strains from other bacterial genera tested were inhibited. Cell-free filtrates from T3...

background& objectives: zataria multiflora boiss is used in traditional medicine to treat gastrointestinal disorders and menorrhagia. the inhibitory effect of this herb on rat uterus contractions has also been reported. the aim of this study was to investigate the effect of zataria multiflora boiss hydroalcoholic leaf extract (zhle) on isolated rat ileum in presence of some known ileum stimulan...

in al-ta‘liqat–which is most likely a collection of avicenna’s lectures– it is intended to answer to a paradox concerning the knowledge of the substance. this paradox can be reconstructed this way: if, by knowing something, its quiddity comes to mind, then with knowing a substance its quiddity–which is a substance–comes to mind. conversely, according to peripatetic philosophy, knowledge is a qu...