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Melatonin is a hormone, released primarily by the pineal gland, that regulates the sleep–wake cycle. 3D ball-and-stick model, white background

Liver Fluke Section under light microscope with white background

A ball and stick model of Dopamine. It is a neurotransmitter affecting behaviour, sleep, learning, perception of pain, mood and motivation.

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

Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.

Abstarct Atom or molecular nanotechnology structure

Open capsule or pill with molecular structure. Nanotechnology concept

Science background with molecule or atom

29 October Republic Day of Türkiye text on a red shiny sphere with a partial Turkish flag on white background. Easy to crop for all your print sizes and social media needs.

B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background

Dihydrotestosterone or androstanolone or stanolone is an endogenous androgen sex steroid and hormone. 3D illustration on white

3D rendering of microscopic molecular structure

Molecular structure of Vitamin B5(Pantothenic acid). Also known as pantothenate. 3D illustration. Chemical structure model: Ball and Stick. RGB + Alpha(Transparent) channel.

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.

Folic acid, folate molecule. It is known as vitamin B9. Molecular model. 3D rendering. Illustration

Omega-3 fatty acids, docosahexaenoic acid (DHA) molecule with oil background 3d rendering

Artificial molecular structure in many colors. Horizontal composition, isolated on white background.

3D cartoon and Gaussian surface models, chain id color scheme, PDB 2y73, white background

Bone marrow plasma cells .Plasma cell neoplasms are diseases in which the body makes too many plasma cells. Plasma cell neoplasms can be benign or malignant. Diagnosed with Immunostain CD138 positive.

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

Conceptual background with colourful spheres positioned in tension.

Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.

A molecular model of the flavonoid Quercetin. An antioxidant and anti-inflamatory, it is used as a nutritional suplement. It is commonly found in many fruits and vegetables and is a significant chemical component of tea. Isolated on white.

Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.

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