This image shows the inking response from a marine sea slug, Aplysia california, during sensitization training.

The image shows a clarified, 1-mm-thick sagittal section of whole brain from a transgenic mouse expressing a fluorescent reporter for caspase-3/7 activity.

This image shows a hippocampal neuron with endogenous labelling of the cytoskeleton proteins β-actin and β3 tubulin using CRISPR/Cas9.

This image shows coronal slices at the level of the hippocampus in TRAP2 mice labeling neuronal ensembles during a rewarded T-maze spatial memory task.

These images show the GABAA receptor δ subunit expressed on parvalbumin-positive interneurons in the basolateral amygdala.

This image shows the developing central nervous system in a Drosophila embryo.

This image shows the demyelinating optic nerve of a mouse model with impaired visual function.

Part of the juvenile cerebellar cortex of a mouse at postnatal day 21.

An image of a wild-type mouse hippocampus expressing Cre-dependent green fluorescent protein.

The midline topographical organization of the corpus callosum of a newborn mouse.