Botanik Digitalis purpurea L. Fingerhut 160:1
Foxglove leaf. Coloured scanning electron micrograph (SEM) of a section through a leaf from a foxglove (Digitalis purpurea) plant, showing its hairs (trichomes). The long hairs are a physical defence against animals that might want to eat the plant's leaves, whilst the glandular hairs (yellow) release highly toxic chemicals when touched. Magnification: x107 when printed at 10 centimetres wide.
© EYE OF SCIENCE/SCIENCE PHOTO LIBRARY
Macrophage engulfing TB bacteria, SEM
Macrophage engulfing TB bacteria. Coloured scanning electron micrograph (SEM) of a macrophage white blood cell (purple) engulfing a tuberculosis (Mycobacterium tuberculosis) bacterium (pink). This process is called phagocytosis. Macrophages are cells of the body's immune system. They phagocytose and destroy pathogens, dead cells and cellular debris.
© SCIENCE PHOTO LIBRARY
Indian giant squirrel (Ratufa indica)
Indian giant squirrel (Ratufa indica) descending a tree head first or is staying motionless in this flattened position, a defence posture. From tip of nose to tip of tail it is nearly a metre long, the largest squirrel. Satpura National Park, Madhya Pradesh, India
© Joe McDonald/AUSCAPE All rights reserved
Alarmed, Animal, Animals, Arboreal, Canopy Habitat, Defensive, Eutheria, Fauna, Full Length, India, Largest Squirrel, Malabar Giant Squirrel, Mammal, Mammalia, One All, Ratufa, Rodent, Rodentia, Sciuridae, Side View, Squirrel, Squirrels, Threatened, Tree Squirrel, Upside Down, Wildlife