What causes a Maltese cross pattern?

What causes a Maltese cross pattern?

The appearance of the Maltese crosses is due to the birefringence of lipid droplets, which consist mainly of cholesterol esters.

What is a Maltese cross in starch?

The starch grains appear bright against the dark field and each starch grain shows a Maltese cross (Esau, 1977). The crossing point of the Maltese cross is located at the hilum. The presence of the telltale Maltese cross can be used to determine if starch is present and has many practical applications.

What is Maltese cross pattern?

The Maltese cross is a cross symbol, consisting of four “V” or arrowhead shaped concave quadrilaterals converging at a central vertex at right angles, two tips pointing outward symmetrically. It is a heraldic cross variant which developed from earlier forms of eight-pointed crosses in the 16th century.

What is are the urinary sediment s that appear as Maltese cross under polarized light?

Birefringent Maltese crosses as seen under polarized light represent either lipid particles [2], 2,8-di-hydroxyadenine crystals [3] (in patients with the rare congenital adenine phosphoribosyltransferase deficiency) or starch [4].

What causes Oval fat bodies in urine?

The so called “oval fat bodies” are a common finding in the sediment of patients with higher grade proteinuria. They represent desquamated tubular epithelial cells or macrophages that are full to the brim with lipid droplets.

How will you prove that potatoes are rich in starch?

According to the observation the food sample or the potato slice turned to blue-black on adding the iodine solution. This proves the presence of starch in the given plant source. This Iodine Test for Starch can be performed for both the liquid and solid food samples.

What is the dye used for staining starch grains?

While iodine stain is often used to identify starch, cooking damage makes the extinction crosses and other identifiable markers less distinct; altered granules, which do not take iodine stain, may be more susceptible to Congo Red dye (Lamb and Loy, 2005) . …

What is are the urinary sediment s that appear as Maltese Cross under polarized light?

What Colour is the Maltese Cross?

The flag of Malta (Maltese: Bandiera ta’ Malta) is a bicolour, with white in the hoist and red in the fly. A representation of the George Cross, awarded to Malta by George VI in 1942, is carried, edged with red, in the canton of the white stripe….Flag of Malta.

Why does my pee look like it has sand in it?

What Are Kidney Stones? Stones in the urinary tract form in the kidneys when small particles, which are usually dissolved in the urine, become oversaturated and begin to form small crystals. These small crystals can continue to grow into larger solid crystals, which resemble sand, gravel or small rocks.

Should you have sediment in your urine?

Urine should typically be clear and not murky, though the color can vary. Sediment, or particles, in your urine can make it look cloudy. In many cases, sediment can only be detected by a clinical test such as a urinalysis.

What are mucus threads in your urine?

Mucus is a thick, slimy substance that coats and moistens certain parts of the body, including the nose, mouth, throat, and urinary tract. A small amount of mucus in your urine is normal. An excess amount may indicate a urinary tract infection (UTI) or other medical condition.

What are the arms of a Maltese cross?

The arms of the Maltese crosses seen in these patients with gross proteinuria are symmetrical (Figure 2 ). Notably, our patient had only moderate proteinuria, no clinical signs of a nephrotic syndrome and the arms of the Maltese crosses were asymmetric and irregular.

What causes Maltese cross like crystals in urinary sediment?

Round particles producing birefringent Maltese crosses under polarized light are commonly seen in the urinary sediment of patients with a nephrotic syndrome. The appearance of the Maltese crosses is due to the birefringence of lipid droplets, which consist mainly of cholesterol esters.

Can you make crystals with polarized light microscopy?

Below are some photomicrographs of Vitamin C with polarized light microscopy – it is now my favourite chemical to make crystals. The crystals look best using low power microscope objectives like 2.5, 4 and 10X.

How are vitamin C crystals photographed with polarization microscopy?

Vitamin C crystals forming along a hair – Polarized light microscopy. Large panorama made up of a dozen photos stitched together – Vitamin C Polarized Light. By stitching together many photos in Photoshop it is possible to make very large prints from the images.