Botanik: mal wieder was vom Efeu - Hedera helix: Spross-Wurzel-Blattstiel-Blatt
Hoya carnosa - stem
Virus Facts for Kids
Structure of typical viruses, the smallest microbe on Earth. Virus is merely a packet of DNA or RNA information. This packet of information is sort of like an instruction manual on how to reproduce. Read more: http://easyscienceforkids.com/viruses-the-smallest-microbe-on-earth/
radial glial cell fate - Google Search
Flora von Deutschland Österreich und der Schweiz (1885)
Light micrograph (LM) of a section through grey matter in the brain, showing human nerve cells (neurones). The nerve cells consist of cell bodies (black) with large fibrous axon nerve processes leading off from them.