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from article Circle
A circle, with radius, diameter, and circumference indicated. (Credit: McGraw-Hill Education)
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from article Circle
Nine-point circle and Euler line PMH.
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from article Hematologic disorders
Myelophthisic anemia results from a space-occupying lesion in the bone marrow, which hinders hematopoiesis (the process by which the cellular elements of the blood are formed). In this photomicrograph, the bone marrow space is expanded, and the…
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from article Hematologic disorders
Scanning electron micrograph of (top) an elongated, flattened sickle cell and (bottom) a normal red blood cell. (Credit: Callista Images/Image Source/Getty Images)
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from article Hematologic disorders
Colored scanning electron micrograph of round leukocytes from a patient with leukemia. (Credit: Steve Gschmeissner/Science Photo Library)
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from article Goat production
Domesticated goats (Capra hircus) raised for meat goat production. (Photo by Susan Boyer, Agricultural Research Service, U.S. Department of Agriculture)
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from article Goat production
Close-up view of a Saanen goat. (Photo by Milan Kořínek)
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from article Goat production
Mechanical (automatic) milking of a purebred Nigerian Dwarf dairy goat on an elevated stand. (Photo courtesy of Lesa Wilke, Bramblestone Farm, Ohio; www.bramblestonefarm.com)
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from article Trihedron
Trihedron and trihedral angles.
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from article Trihedron
Spherical triangle ABC formed by intersection of sphere with a trihedron. The center of the sphere is at the vertex of the trihedron.
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from article Apple
Empire apple (Malus pumila). (Credit: Peggy Greb/Agricultural Research Service, United States Department of Agriculture)
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from article Apple
Apple trees in an orchard in late autumn. (Credit: Sandrine Bouvier/Alamy)
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from article Medical bacteriology
Microscopic view of bacterial pneumonia, which is a type of pneumonia caused by bacterial infection. (Credit: Stocktrek Images/Corbis)
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from article Medical bacteriology
Bacteria culture growth on agar medium in a petri dish. (Credit: Sompraaong0042/Shutterstock)
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from article Genetically modified organism (GMO)
Transgenic zebrafish cells. Green fluorescent protein (GFP) is a fluorescent protein first discovered in the jellyfish Aequorea victoria. GFP is commonly used as a reporter of gene expression in other species. Here, GFP is expressed by zebrafish…
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from article Genetically modified organism (GMO)
Genome editing technologies. In particular, targeted nucleases are a powerful tool for precise genome editing in GMOs. Among these tools are (a) transcription activator-like effector nucleases (TALENs), (b) zinc-finger proteins (ZFPs), (c) homing…
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from article Wood anatomy
Annual tree rings are distinct features of wood anatomy. The combined concentric bands of light and dark areas can help investigators to determine the age of a tree. (Credit: DrimaFilm/Shutterstock)
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from article Wood anatomy
Light micrograph of a section through the stem of a lime tree (genus Tilia). The pith is at the center and is surrounded by a layer of wood (xylem). A thin cambium separates this from the phloem. An outer layer of collenchyma is enclosed by the…
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from article Wood anatomy
Structure of a typical hardwood. (Credit: U.S. Department of Agriculture)
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from article Wood anatomy
Structure of a typical softwood. (Credit: U.S. Department of Agriculture)
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from article Channelrhodopsin
Three-dimensional (3D) protein crystal structure of channelrhodopsin variant C1C2. (Image courtesy of Protein Data Bank 3UG9, Molecular Modeling Database 96737)
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from article Plague
Plague ecology in the United States. The left panel shows how plague occurs in nature among rodents. The right panel shows how plague is spread from rodents to humans and domestic animals. (Credit: Centers for Disease Control and Prevention)
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from article Nursing
Nursing provides physical and emotional care to ailing individuals. (Credit: Fuse/Getty Images)
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from article Potato
Potato (Solanum tuberosum), also known as the Irish potato. (Credit: Peggy Greb/Agricultural Research Service, U.S. Department of Agriculture)
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from article Potato
Diagram of a potato plant. (Credit: Potato Association of America)
