Only the best for the little one: the zebra fish is nurtured and cared for. Because only when the fish is healthy, does it produce many eggs — and these are the basis for the Alzheimer's research. They will be genetically changed in such a way that the fish will later develop the same symptoms as an Alzheimer's patient. This is possible for a reason one might not suspect at first glance: fish have an internal blueprint similar to that of humans. Among other things, the nerve cells in a zebra fish function in the same way as they do in a human brain. Will there soon be more fish darting about in the zebra fish tank?