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Posters & Jigsaws since 2004
Home > All Images > 2002 > September

September Gallery

Available as Framed Prints, Photos, Wall Art and Gift Items

Choose from 715 pictures in our September collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


Brain Scan Featured September Print

Brain Scan

Obsessive-compulsive disorder. Coloured Positron Emission Tomography (PET) scans of a human brain, showing active areas in obsessive compulsive disorder. The brain is sectioned axially (left), sagittally (centre), coronally (at right). In this patient, positive correlations (activity increases as symptoms get stronger) are in the top row, seen coloured in the left orbital region, prefrontal, left frontal gyri and thalamus. Negative correlation (activity decreasing as symptoms strengthen) are in the bottom row in the right frontal gyrus and parietal regions. Active areas coloured red/yellow show blood flow detected by a radioactive tracer

© Wellcome Dept.Of Cognitive Neurology/Science Photo Library

Microcystis blue-green alga Featured September Print

Microcystis blue-green alga

Blue-green algae. Coloured transmission electron micrograph of a single cell of the blue-green algae Microcystis aeruginosa (also known as Anacystis cyanea). Blue-green algae (cyanobacteria) are primitive algae; in structure they are related to bacteria. They are prokaryotes containing no membrane-bound nucleus; instead, as in bacteria, nuclear material is dispersed throughout the cell. Photosynthetic lamellae (thread-like structures, outer part of cell) are the primitive chloroplasts. M.aeruginosa cells are found in colonies; they bloom in late summer and may liberate a toxin that kills plankton, fish and birds. Magnification: x16, 320 at 6x6cm size

© A.B. DOWSETT/SCIENCE PHOTO LIBRARY