T-helper cell with particles. T-helper cells (CD4+ cells) are immune cells that are susceptible to HIV infection.

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Fungi and the park: the lovely mushroom drawings of Violetta White Delafield.......#fungi
https://t.co/rZkpq75rDZ

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Botanical illustration and the park: Flora de la Real Expedición Botánica del Nuevo Reino de Granada. T. 7. Orchidaceae 1..........by Mutis y Bosio, José Celestino............https://t.co/Lueh1rziLD

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Botanical illustration and the park: Cole's garden annual, from Cole's seed stores, Pella Iowa, 1907 and various years......https://t.co/URKBCryZ4s

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An oleander plant (Nerium oleander): flowering stem. Coloured lithograph, c. 1850, after A. Bétrérnieux (?). From .

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Botanical illustration and the park: Chase fruit and flowers in natural colors......by Chase Brothers Co, 1922, BHL/Congress......https://t.co/w8G7Rs2Zrh

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Botanical illustration and the park: the work of Ogawa Kazumasa, 1860-1929, Japanese photographer, printer, and publisher known for his pioneering work in photomechanical printing and photography in the Meiji era.......https://t.co/Ho3EBjILVK

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Botanical illustration and the park: drawings from the Spanish Royal Botanical Expedition to New Granada (1783-1816) headed by José Celestino Mutis..........https://t.co/I6S4x8NxAv (Images: Floral Daily)

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