Leben im Teich: Gemeiner Wasserfloh (Daphnia pulex) (Phyllopoda)
Water Flea with eggs - Daphnia pulex - This most common species of water flea belongs to the family Daphiniidae. It has a cosmopolitan distribution in a wide range of aquatic habitats, although it is most closely associated with small, shaded pools and lakes of an oligotrophic nature. (Their range extends across most of the world - Americas, Europe & Australia - in appropriate habitats, most of which offer little by way of nutrients)
Il cancro al seno uccide ogni anno milioni di donne; per combatterlo è allo studio un vaccino messo a punto dall'Università di Washington
Cross-section of the esophagus showing, from the central region outward, the lumen, mucosa, submucosa, a muscularis externa, and a thin adventia or serosa. SEM X60
Not for the squeamish: Meet the planet's 'vampire' bugs which spend every waking moment looking for ways to extract blood from you
From our comfortable spot near the top of the food chain, it is easy to forget that we are still prey for numerous animals. But take a peek at some of the creepy teeth and feeding equipment - if you dare.
Butterflies in the Time of Dinosaurs, with Nary a Flower in Sight
Jurassic butterflies disappeared a full 45 million years before the first caterpillar decided to grow up and become a beautiful butterfly—again
Inner surface of a medical catheter infected with the Yeast (Candida albicans), which can result in serious tissue infections. Catheters are...
Cross-section of the mammal colon or large intestine. From the lumen outward are the mucosa, submucosa, muscularis externa, and the thin outer serosa. The highly folded layers are typical of an empty organ. SEM X60. **On Page Credit Required**