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A ball-and-stick molecular model of the hormone Orexin, also known as Hypocretin. Orexin is involved in the regulation of the sleep/wake cycle and it stimulates apetite, wakefulness and energy expenditure. It has been linked with Alzheimer's disease. Isolated on white.

Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration

Water (Molecular formula: H2O) is a clear, odorless, tasteless liquid that is essential for most animal and plant life. Chemical structure model: Ball and Stick. 3D illustration.

Backgrounds of Bacteria and Mold under the microscope in Lab.

Molecular model of amylose, one of the two sugar components in starch.

PAPS Smear study of a young women under microscopy showing Atrophic changes in uterus which is unusual at young age.

Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.

Thyroid cancer: Microscopic image of Metastatic papillary carcinoma of thyroid. Reactive change. Lymph node carcinoma.

Slice of natural crystal for patterns and textures use with high resolution.

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.

Prostaglandin D2 or PGD2 is a prostaglandin that binds to the receptor PTGDR as well as CRTH2. 3d illustration

Colored plant cells with damages caused by a parasitic animal under the microscope.

Breast tissue adenocarcinoma immunohistochemistry. Estrogen receptors.

A close-up photo of unripe sumac (Rhus coriaria) stock photo

Phenol in old glass bottle on a sheet of paper with chemical formulae (selective focus)

Background of mold in the wood of the house.

Photo of saturated yellow bunch of wild flowers found in nature. Shallow depth of field

Remdesivir is a broad-spectrum antiviral medication, it is a specific treatment for COVID-19. 3d illustration

3D cartoon and Gaussian surface models, PDB 7qqf, white background

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flowers of the medicinal elder plant bloom on the bush in summer

A ball and stick model of Eicosapentaenoic Acid or EPA. It is an omega-3 polyunsaturated fatty acid. It is introduced into the diet by eating oily fish. Isolated on white.

The study of plant tissues under the microscope in the laboratory.

Acute ordinary hepatitis liver biopsy under light microscopy

Tafamidis is a medication used to delay loss of peripheral nerve function in adults with familial amyloid polyneuropathy. 3d illustration

Carcinoid tumors are a type of slow-growing cancer that can arise in several places throughout your body. Carcinoid tumors, which are one subset of tumors called neuroendocrine tumors, usually begin in the digestive tract (stomach, appendix, small intestine, colon, rectum) or in the lungs. Site: Ovary

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