Mucous layer source

Figure 2 Depiction of some components of the vertebrate olfactory epithelium in the nose. Odorants, e.g., carvone, deposit themselves in the mucous layer and interact with molecular receptors in the membrane of cilia of the olfactory receptor cells. Subsequent to intracellular signal transduction events, action potentials are sent via the olfactory axons to the olfactory bulbs in the brain. Supporting cells provide physical and physiological support for the olfactory neurons. Undifferentiated basal (stem) cells are the source of new supporting and olfactory receptor cells.

In order to obtain a purer product, free from foreign enzymes, Hanunarsten adopts the following method The source of rennet is preferably the mucous membrane of the stomach dried at a temperature of 35°-40 C. As in the process used by Ebstein and Grutzner, the stomach is divided following the line of small curvature, and stretched, the mucous membrane being underneath. The muscular layer is then cut away with a razor, the pouch spread out on filter paper, the mucous membrane outside, and is dried at 35°-4o . After drying, the paper is taken away. The homy substance thus obtained is cut in small... 

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