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The LDL-receptor (red) is a membrane protein found in almost every human cell. It binds to the apoprotein B100 from LDL-particles and mediates their internalization (endocytosis) in the cell. This occurs in almost all cells but mainly in the liver where it removes about 70 % of LDL from the circulation.
plant Stem-Collenchyma C.S. under light mircoscope with white background
Molecules of collagen serum and cream applied to skin and absorbed. 3D rendering.
Microscopic photograph of a professionally prepared slide demonstrating vulvar malignant melanoma. Melanomas of the vulva and vagina are rare, accounting for no more that 2% of melanomas among women. Melanoma of the vulva behaves like melanoma in any other location and may affect a much younger population.
3d rendering of Lipid-coated polymeric nanoparticles conjugated poly ethylene glycol for drug delivery
Inside protein molecule
Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration
corn stem micrograph with dye
Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.
plant rape flower cross section under light mircoscope with white background
Cross-section Dicot, Monocot and Root of Plant Stem under the microscope for classroom education.
Myxoid liposarcoma.  Myxoid/round cell liposarcoma, or MRCLS, is one of several types of liposarcoma. Liposarcoma is a rare cancer that grows in the cells that store fat in the body. MRCLS usually grows in the arms and legs. These tumors grow slowly, and they can spread to other parts of the body
3D illustration of a cluster of Fat cells isolated on white.
Abstract particles
Cell membrane with blue background, 3d rendering. Computer digital drawing.
Intricate bubble texture macro in bright colors for abstract background. Liquid bubbles lit from below with colors injected into the liquid as a design or art abstract.
After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.
Structural model of Benzene molecule
Gold serum with bubble inside drop on skin cell for professional skin treatment product. 3D rendering.
Squash preparation of stained onion root tip cells showing various stages of mitosis. Differential interference contrast optics on a Leica microscope, Image taken with the X40 objective lens.  Depth of focus is extremely shallow (just a few microns).  Differential interference contrast results in an optical slice horizontally through the specimen providing maximum possible resolution at this magnification and good contrast. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.
Isolated human papillomavirus genomes consist of double-stranded circular DNA 3d rendering
A molecular model of Bisphenol A or BPA.  It is a common building block in the production of many epoxy resins and plastics including polycarbonate plastic. As such it is present in a huge range of food packaging and household products. There are now concerns about its health effects, particularly its effect on children, infants and fetuses.   Isolated on white.
3D cartoon and Gaussian surface models, PDB 1uea, white background
Molecular model of amylose, one of the two sugar components in starch
The study of plant tissues under the microscope in the laboratory.
Paraganglioma is a type of neuroendocrine tumor that forms near certain blood vessels and nerves outside of the adrenal glands. The adrenal glands are important for making hormones that control many functions in the body and are located on top of the kidneys.
Cross-section of mitochondria showing their structure
Tilia Stem C.S.under light microscopy
Structure of Monkeypox virus, 3D illustration. A zoonotic virus from Poxviridae family, causes monkeypox, a pox-like disease
Early stage, two days, fertilized human eggs before transfer to the woman in an IVF procedure.
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