Head regeneration of the hemichordates, Ptychodera flava
Warm or Cold?
Brain slices of older tissues prepared with ice-cold (blue) and warm (red) preparation methods, as demonstrated by Shiwei Huang and Marylka Yoe Uusisaari in a paper in Frontiers in Cellular Neuroscience. The asterisks (*) indicate visible neurons. While no healthy neurons are visible in the left image, seven are visible in the right. Abbreviations: PN, Purkinje neuron layer; ML, molecular layer; GrC, granular cell layer.
The Beauty of Numbers
“The simplicity of some mathematical proofs is quite beautiful. It’s almost a means of knowing whether your work is sound – if the proof isn’t beautiful, then something is wrong,” says Hikami. “But it’s easy to get consumed by an equation’s charm and place too much emphasis on what mathematics can really do.”
A coral Acropora digitifera larva (green) and the symbiontic Symbiodinium (red)
The Marine Genomics Unit of OIST has decoded the genome of the algae Symbiodinium minutum. The paper was published in the online version of Current Biology on July 11. This is a major advance in understanding the complex ecology of coral reefs.