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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
3D rendering of microscopic particles and bubbles
Dopamine ( DA) hormone molecule. Molecular model. 3D rendering. 3D illustration
A molecular model of the plasticizer Dibutyl Phthalate or DBP.  As a plasticizer it has been used in many products including adhesives, textiles, cosmetics and children's toys. There are now concerns about its health effects, particularly its effect on male health and behaviour.   Isolated on white.
Science background with molecule or atom
Chain or ribbon diatom, a type of algae.
Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration
Fictitious molecule model inside red and blue pill isolated on white.
Antibiotic resistance testing. Selective focus show the inhibition zone of Ofloxacin (OXF) antibiotic on microbial colony.
Liver Fluke Section under light microscope with white background
Chloroquini phosphas, chloroquine medicine substance. Drug introduced as treatment for coronavirus (SARS-CoV-2). Active in COVID-19 supportive therapy. Chemical formula written next to white pills.
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
CD47 also known as integrin associated protein is a transmembrane protein that in humans is encoded by the CD47 gene. CD47 belongs to the immunoglobulin superfamily and partners with membrane integrins and also binds the ligands thrombospondin-1 and signal-regulatory protein alpha. 3D cartoon and Gaussian surface models, chain id color scheme, based on PDB 2jjt, white background
Structural model of Benzene molecule
Halofantrine is a drug used to treat malaria. Halofantrine's structure contains a substituted phenanthrene, and is related to the antimalarial drugs quinine and lumefantrine. 3d illustration
It takes patience to find results
Bisphenol A, BPA, C15H16O2 molecule. It is precursor to polycarbonate plastics and epoxy resins. Molecular model. 3D rendering. 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.
glycerin in a bottle, chemical ingredient in beauty product, skin care products
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
3D cartoon and Gaussian surface models, PDB 1uea, white background
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.
Tafamidis is a medication used to delay loss of peripheral nerve function in adults with familial amyloid polyneuropathy. 3d illustration
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.
Antimicrobial susceptibility testing in petri dish. Microbiologist check Antibiotic resistance of bacteria.
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.
Colonies of pathogenic bacteria in a Petri dish, microbiological studies
Molecular Model of Vitamin D.
3D cartoon and Gaussian surface models, PDB 2zva, white background
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Free Images: "bestof:Chemical endocannabinoide 1.png Struttura della molecola di un endocannabinoide realizzata da Soddi tramite il programma ChemIDplus ChemIDplus is a free"
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