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This is perhaps why this curious property of the drops remained unexplained for centuries. [ 7 ] The second unusual property of the drops, namely the strength of the heads, is a direct consequence of large compressive residual stresses — up to 700 megapascals (100,000 psi) — that exist in the vicinity of the head's ...
Lysozyme does this by dissolving a layer in the outer coating, called peptidoglycan, of certain bacteria. It is a typical body fluid with salt content similar to blood plasma. Usually, in a 24-hour period, 0.75 to 1.1 grams (0.03–0.04-ounce avoirdupois) of tears are secreted; this rate slows with age.
A Lacrymatory, at the Beja museum in Portugal.. A lacrymatory, lachrymatory or lacrimarium (from the Latin lacrima, 'tear') is a small vessel of terracotta or, more frequently, of glass, found in Roman and late Greek tombs, and formerly supposed to have been bottles into which mourners dropped their tears.
Here are the 12 best mascaras for sensitive eyes, according to editor testing and two ophthalmologists. Shop our picks for volume, length, definition, and more.
The lacrimal gland is a compound tubuloacinar gland, it is made up of many lobules separated by connective tissue, each lobule contains many acini.The acini composed of large serous cells which, produce a watery serous secretion, serous cells are filled with lightly stained secretory granules and surrounded by well-developed myoepithelial cells and a sparse, vascular stroma.
Word of a Virgin Mary statue in Floridablanca, Colombia, has gotten out, attracting religious aficionados due to one peculiar feature: A bloody "tear-drop" that appears to be running down her cheek.
Excess tears flow through the nasolacrimal duct which drains into the inferior nasal meatus. This is the reason the nose starts to run when a person is crying or has watery eyes from an allergy, and why one can sometimes taste eye drops. This is for the same reason when applying some eye drops it is often advised to close the nasolacrimal duct ...
A marked increase of dacrocytes is known as dacrocytosis. These tear drop cells are found primarily in diseases with bone marrow fibrosis, such as: primary myelofibrosis, myelodysplastic syndromes during the late course of the disease, rare form of acute leukemias and myelophthisis caused by metastatic cancers.