Top Pictures: micrographs

C0048613-Folic_Acid_Crystal-SPL.jpg

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Folic Acid crystal; transmitted light micrograph; 20x magnification.

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C0048607-Pangamic_Acid_Crystal-SPL.jpg

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Pangamic acid, (B15), crystal; transmitted light micrograph.

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C0048621-Testosterone_Crystal-SPL.jpg

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Testosterone crystal; transmitted light micrograph.

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Human skin.jpg

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Human skin.

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C0031915-Mosquito_Scales-SPL.jpg

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The scales found on the back of a mosquito (family Culicidae). These scales decrease fluid flow across the surface of the mosquito and allow it to fly with less energy. Several mosquito species are vectors for human diseases, including malaria and yellow fever. This is a scanning electron microscope image. The calibration bar is 10 um and the magnification is 360 x.

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P154217-Skeletal_muscle-SPL.jpg

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Enhancement of 5E6120. Striated muscle. coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding- pattern of the muscle fibrils is seen. The fibrils run in parallel (from left to right) and between them runs sarcoplasmic reticulum (SR) that transmits nerve impulses to the fibrils. Here, the SR contains many mitochondria. Within each fibril are contractile units called sarcomeres separated by lines. A sarcomere has protein filaments of myosin and actin that slide over each other, thereby causing the whole muscle to contract. Skeletal muscle is responsible for voluntary muscle movement in the body.

actinfilamentanatomybiologybodycellhorizontalhumanbodiesimageslandscapemagnifiedimagemicrographmicrographsmicrographymicroscopicphotosmitochondriamusclefibrilfibrilsmusclesmyosinpatternphysiologyredsarcomeressarcoplasmicreticulumscienceskeletalsrstriatedsubjectstemtransmissionelectron

C0031782-Crystal__aspirin-SPL.jpg

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Crystal: aspirin.

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P154218-Skeletal_muscle-SPL.jpg

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Enhancement of 5E6120. Striated muscle. coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding- pattern of the muscle fibrils is seen. The fibrils run in parallel (from left to right) and between them runs sarcoplasmic reticulum (SR) that transmits nerve impulses to the fibrils. Here, the SR contains many mitochondria. Within each fibril are contractile units called sarcomeres separated by lines. A sarcomere has protein filaments of myosin and actin that slide over each other, thereby causing the whole muscle to contract. Skeletal muscle is responsible for voluntary muscle movement in the body.

actinfilamentanatomybiologybodycellhorizontalhumanbodiesimageslandscapemagnifiedimagemicrographmicrographsmicrographymicroscopicphotosmitochondriamusclefibrilfibrilsmusclesmyosinpatternphysiologyredsarcomeresarcomeressarcoplasmicreticulumscienceskeletalsrstriatedsubjectstemtransmissionelectron