Stem Cells #22
Maurizio De Angelis/science Photo Library
Zebrafish
Claudia Stocker/science Photo Library
Saffron Crocus (saffron Sativus) Flowers
Bob Gibbons/science Photo Library
Anemone 'lord Lieutenant'
Ian Gowland/science Photo Library
Protein Structure Determination
Pasieka
Silver Bromide Precipitation
Martyn F. Chillmaid/science Photo Library
Methanol
Martyn F. Chillmaid/science Photo Library
White Bryony Stem
Dr Keith Wheeler/science Photo Library
Butanoic Acid
Martyn F. Chillmaid/science Photo Library
Burdock Stem
Dr Keith Wheeler/science Photo Library
Iris 'sapphire Beauty'
Dr Keith Wheeler/science Photo Library
Clematis 'lasurstern' Stamens
Martyn F. Chillmaid/science Photo Library
Cosmarium Desmids #1
Marek Mis
Netrium Desmid And Green Alga
Marek Mis/science Photo Library
Human Brain Structures
Pixologicstudio/science Photo Library
Hover Fly Voluceila Syrphus
Ian Gowland/science Photo Library
Bacteria From A Domestic Fridge
Steve Gschmeissner/science Photo Library
Macrophage And Bacteria
Tim Vernon / Science Photo Library
Green Algae
Marek Mis/science Photo Library
Vorticella Protozoa
Marek Mis/science Photo Library
Orchid Flower #1
Ian Hooton/science Photo Library
Flower
Maria Mosolova/science Photo Library
Human Brain Structures #3
Pixologicstudio/science Photo Library
Dna Damage #3
Mehau Kulyk/science Photo Library
Female Intestinal Cancer
Pixologicstudio/science Photo Library
Bacillus Anthracis #4
Dennis Kunkel Microscopy/science Photo Library
Cranesbill (geranium 'brookside')
Neil Joy/science Photo Library
Human Brain Anatomy #25
Pixologicstudio/science Photo Library
Man With Intestinal Cancer
Pixologicstudio/science Photo Library
Cutaway Artwork Of A Termite Mound
Sally Bensusen/science Photo Library
Skeletal Muscle
Microscape/science Photo Library
Rosebay Willowherb Pollen
Karl Gaff/science Photo Library
Midnight Sun Over Mesters Vig
Simon Fraser/science Photo Library
Alveoli Of The Lungs
Pixologicstudio/science Photo Library
Phlox 'paparazzi Purple'
Karl Gaff / Science Photo Library
Human Spleen And Lymph Node #1
Pixologicstudio/science Photo Library
Liposome #3
Maurizio De Angelis/science Photo Library
Bacteria Found On Mobile Phone #3
Steve Gschmeissner/science Photo Library
Man With Intestinal Cancer #1
Pixologicstudio/science Photo Library
Escherichia Coli Bacteria In Blood
Kateryna Kon/science Photo Library
Human Brain Anatomy #51
Pixologicstudio/science Photo Library
Brain Anatomy #2
Tim Vernon / Science Photo Library
Closterium Desmid #1
Rogelio Moreno/science Photo Library
Stem Cells #8
Maurizio De Angelis/science Photo Library
Human Brain Structures #12
Pixologicstudio/science Photo Library
Coloured Image Of A Fossilised Ammonite Shell #1
Martin Bond/science Photo Library
Child With Intestinal Cancer
Pixologicstudio/science Photo Library
Section Through Wood Of Horse Chestnut
Alfred Pasieka/science Photo Library
Light Micrograph Of The Lung In Chronic Pneumonia
Astrid & Hanns-frieder Michler/science Photo Library
Female Doctor In Purple Top With Stethoscope #1
Science Photo Library
New York Skyline Before 11th September
Alex Bartel/science Photo Library
Human Brain Structures #13
Pixologicstudio/science Photo Library
Iris Histrioides 'palm Springs'
Adrian Thomas/science Photo Library
Hepatitis B Virus Particle
Kateryna Kon/science Photo Library
Brain Tumour
Simon Fraser/royal Victoria Infirmary, Newcastle-upon-tyne/science Photo Library
Abstract Artwork Of A Hay Fever Sufferer
Andrzej Dudzinski/science Photo Library
Paramecium Bursaria
Marek Mis/science Photo Library
Bubbles And Plant Tissue
Marek Mis/science Photo Library
Rosebay Willowherb Pollen #1
Karl Gaff/science Photo Library
Heart Muscle
Microscape/science Photo Library
Liver Tissue #1
John Griffin, University Of Queensland/science Photo Library
Acinetobacter Baumannii #3
Dennis Kunkel Microscopy/science Photo Library
Human Brain Structures #18
Pixologicstudio/science Photo Library
Saffron Crocus (saffron Sativus) Flower
Bob Gibbons/science Photo Library
Dna Strand #5
Mehau Kulyk/science Photo Library
Double Snowflake
Kenneth Libbrecht/science Photo Library
Larkspur (delphinium Oxysepalum)
Debbie White/royal Botanic Garden Edinburgh/ Science Photo Library
Stomach Mucosa
Microscape/science Photo Library
Water Flea And Paramecium
Marek Mis/science Photo Library
Shredded Office Paper #1
Tony Craddock/science Photo Library