Technical description: Photomontage of superposed confocal microscopy images of the adult mouse brain (hippocampus), showing microglia (white), astrocytes (blue), some immature neurons (red), endothelial cells (yellow) and stem cells (green). Besides its artistic nature, this picture shows the diversity and entanglement of brains cells. These cells also constitute the neurogenic niche, which helps stem cells produce new neurons in the adult brain. Image size: 400 x 400 micrometers.
General comment: The brain is generally considered as network of neurons. This image shows the diversity of cells that also constitute it: Astrocytes (blue), microglia (white), stem cells (green), blood vessels (yellow) and some immature neurons (red). The complexity of this picture nicely represents the complexity of the cellular interactions occurring in real time in the brain.
Credit: Sébastien Sultan, Nicolas Toni
Technical description: Confocal microscope picture of immature neurons (red) growing towards astrocytes (green), in the adult mouse hippocampus. Astrocytes produce a cocktail of molecules that help new neurons survive and mature in the adult brain. Image size: 400x400 micrometers.
General comment: Immature neurons of the adult brain (red) grow in the direction of astrocytes (green), which produce molecules that help the newcomers survive and integrate in the adult brain. Most neurons formed in the adult brain will die quickly and in this image, they look like they are reaching out for astrocytes as if they knew their life depended on it.
By: Cassandre Kinnaer
Light microscopy of filamentous fission yeast Schizosaccharomyces japonicus growing on agar plate.
By: C. Kinnaer
Fluorescence microscopy of Actin (green) and Microtubule (red) cytoskeleton in filamentous fission yeast Schizosaccharomyces japonicus. Scale bar: 10um.
By: M. Marek
Aspergillus niger - one of the most common species of the genus Aspergillus. It causes a disease called black mould on certain fruits and vegetables and is the main agent in the fermentation of Pu-erh tea. In extremely rare instances, it can infect humans leading to to a serious lung disease called aspergillosis. Aspergillosis is, in particular, frequent among horticultural workers who inhale peat dust, which can be rich in Aspergillus spores. It has been found also in the mummies of ancient Egyptian tombs and can be inhaled when they are disturbed.
By: C. van der Kooi
Ranunculus repens habitus picture.
By: C. van der Kooi
Runner bean (Phaseolus coccineus), showing pigment distribution and cells inside the flower.
By: T. Andersen
A passage cell in the suberized endodermis of Arabidopsis.