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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 Molecular Structure,Ozone,Hydrogen and oxygen

Anthracene molecule. It is polycyclic aromatic hydrocarbon PAH. Molecular model. 3D rendering. Illustration

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.

flower of Viburnum tinus in front of white background

White gooseneck loosestrife, Lysimachia clethroides, white flower spike in close up with a blurred background of leaves.

Many small, white flowers of the Common Yarrow (Achillea millefolium), comprising a single inflorescence, growing in the margins of an agricultural field in central Scotland. The species is native to many areas in the northern hemisphere and has been used by many peoples both to feed livestock and because its essential oils contain many medicinal properties and include the painkiller aspirin.

Pair of corymbs of white flowers of Viburnum opulus in May

$Small, rather slender Tree, with smooth silvery-gray Branches. Leaves pinnate, with 5-7 pairs of oblong toothed leaflets, green, hairy beneath. Flowers 8-10mm, in domes clusters.\nHabitat: Woodland, Hedgerows, Moors and Mountains to 2400m, mainly on light Soils. \nFlowering Season: May-June.\nDistribution: Western Europe, except the far North.\n\nThis is a common Species in the Netherlands. Also planted in Parks.$

Paclitaxel or Taxol is a chemotherapy medication used to treat a number of types of cancer. 3d illustration

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

Dopamine ( DA) hormone molecule. Molecular model. 3D rendering. 3D illustration

3D illustration of a molecule on white background with alpha layer

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

Viburnum dilatatum, commonly called linden viburnum because its leaves resemble those of the linden tree, is native to East Asia, including Japan. White flowers in showy, domed clusters appear in late spring (April to early June). Flowers give way to bright red fruits that mature to black in fall and winter. Berries are attractive to birds.

lithium bromide, a chemical compound of bromine and lithium that is extremely hygroscopic and used as a desiccant in air conditioning systems

Close-up of small white elderflowers. The flowers are covered with tiny dewdrops. The background is dark

$Stout medium to tall, rather bristly biennial or short-lived perennial, to 2.5m; stem hollow, ridged. Leaves pinnate with often 5 broad, lobed and toothed segments, bristly; upper leaves with large inflated bases. Flowers white, rarely pink, 5-10mm, in large umbels up to 15cm across with 12-25 rays; petals of outer flowers very unequal; bracts few or absent. Fruit elliptical to rounded, 7-10mm, flattened and broadly winged.\nHabitat: Open woodland, banks and rough grassland.\nFlowering Season: April-September.\nDistribution: Throughout Europe, except the extreme north.\n\nGenerally the commonest umbellifer flowering during the (late) summer and quite variable.$

Opening white flowers of Sorbus aria in May

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

Small white tropical flower with green leaves at twig

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Main Beach, Lake Nokomis, Minneapolis, Minnesota - 20050814.jpg

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Blooming bottlebrush (Callistemon) found in Kelantan, Malaysia.JPG

Wild Mouse (Pleasure Beach, Blackpool).JPG

Alex Martinez - baseball - UCLA Bruins.jpg

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