The histamine content of guinea pig mast cells

Zusammenfassung Von der Voraussetzung ausgehend, dass alles Histamin in den Mastzellen lokalisiert ist, wurde berechnet, dass jede Mastzelle in Aorta, Trachea, Uterus und Jejunum des Meerschweinchens 25–34 µµg Histamin-Base enthält. Die anaphylaktische Freisetzung des Histamins war proportional der Verminderung des Mastzellengehaltes und wurde zu 12–17 µµg/Mastzelle berechnet. Jejunum gab keine anaphylaktische Reaktion.     

On the structure of the chromosomes ofScilla non-scripta

Cellular and Molecular Life Sciences - La structure des chromosomes somatiques apparaît comme une série de spiralisations plectonémiques successives à trois niveaux...     

Hemoglobin binding capacity of heat incubated sera of different haptoglobin subtypes

Summary Sera of haptoglobin subtypes Hp 1F-1F and Hp 1S-1S incubated at 56°C show a different degree of reduction in the hemoglobin binding capacity. The difference is small but significant.     

The effect of vasoactive agents on nutritive collateral circulation in rat muscles

Summary The relationship between the collateral and control nutritive blood flow (⁸⁶Rb) of the triceps muscle was not influenced by vasoactive agents (phenylephrine, angiotensin II, vasopressin) in the rat. Isolevine caused vasodilation only in the control muscle.     

Hydrolyse enzymatique de la propionylcholine,de l'acétylthiocholine et de la butyrylthiocholine par le rectus de grenouille

Summary The enzymatic hydrolysis of propionylcholine (PrCh), acetylthiocholine (AcThCh), and butyrylthiocholine (BuThCh), by extracts of the muscle rectus abdominis, was determined. Inhibition of this hydrolysis by D.F.P. and 3318 CT [bis(pipéridinométhylcoumaranyl- 5)cétone diméthiodide] — utilized over a range of concentrations covering both specific and non-specific concentrations—showed that PrCh is hydrolyzed by an acetylcholinesterase (70%) and an Xcholinesterase (30%), AcThCh by the AcChE (70%), the XChE (15%) and a thioesterase (15%) and BuThCh by the XChE (70%) and a thioesterase (30%).