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Observation of calcium phosphate particles in a mouse kidney formed under a high-phosphate diet by light and electron microscope technology (CAT#: STEM-MIT-0086-LJX)

Introduction

The basic function of the kidney is to produce urine to remove metabolites and certain wastes and poisons from the body, while retaining water and other useful substances through reabsorption.
Calcium phosphate forms particles under excessive urinary excretion of phosphate in the kidney. While the formation of calcium phosphate particles (CaPs) has been implicated in the damage to renal tubular cells and renal dysfunction, clarifying the ultrastructural information and the elemental composition of the small CaPs in the wide areas of kidney tissue has been technically difficult.
This sevice achieves correlative and sequential light as well as electron microscopic CaP observation in the kidney tissue by combining fluorescent staining for CaPs and energy-dispersive X-ray spectroscopy (EDS) in scanning electron microscopy (SEM) on resin sections prepared using high-pressure freezing and freeze substitution.




Principle

Scanning electron microscope (SEM) is another tool to study the surface morphology, which is different from transmission electron microscope and optical microscope. SEM uses extremely narrow electron beams to scan the sample and uses point-by-point imaging to obtain an enlarged image. SEM generates secondary electron emission through the interaction between the electron beam and the sample, and the secondary electron can produce the morphologic image of the sample surface enlargement. SEM can directly utilize the material properties of the sample surface for microscopic imaging.
SEM provides the possibility to study the relationship between the three-dimensional structure of cell or tissue surface and antigen composition. The markers used in scanning electron microscopy should be able to be in the range of scanning electron microscopy, and have good localization ability to cell or tissue antigen. The selection of markers should be based on the purpose of the study. If the volume of the marker cells is large, large markers should be used, while small, easily identifiable markers should be selected to locate the receptor.

Applications

Imaging and analysis in the fields of biology, medicine, materials and chemistry

Procedure

1. Sampling
2. Preparation of slices
3. Staining (Select according to the specific experimental situation)
4. Observation

Materials

• Sample Type:
Mouse kidney

Notes

Turn off the power when the device is not in use
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