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Zebra fish

Fish trip. Figure: The knowledge site using DALEE. The image is for illustration only and should not be considered a scientific image

Fish trip

The institute's scientists have developed a method for detecting the neurological effects of psychedelic drugs. Middle: Zebrafish on hallucinogenic mushrooms. The goal: to pave the way for more effective treatments for depression and other mood disorders
The pituitary gland of the zebrafish. The variety of cell types are marked in different colors: in purple - phytocytes, in red and green - two types of hormone-producing cells

Where does the fish secrete from: back to the origins of the pituitary gland

Weizmann Institute scientists are challenging a 200-year-old doctrine about the formation of the gland from the secretion of hormones. Their findings may lead to new approaches in the treatment of various medical problems
Zebra fish. Image: depositphotos.com

Thanks to the study of zebrafish, researchers have identified a mechanism that explains fertility problems in humans

 University researchers have identified a new type of organelle that has not been discovered in gametes before. According to them, a failure in its function causes infertility because it is responsible for the organization of the chromosomes in the sex cells: "The discovery advances us towards finding medical solutions"
A group of zebra fish in an aquarium. Illustration: depositphotos.com

Someone to swim with

How do zebrafish know how to swim in groups?
Prof. David Sheprincek and research student Udi Binstock from the School of Neurobiology, Biochemistry and Biophysics at Tel Aviv University. PR photo

A new study on the brain of zebrafish has proven that new neurons are formed in the brain in an orderly and coordinated manner

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The researchers found that the activation process of stem cells in the brain responsible for the production of neurons (nerve cells) is not random but ordered and coordinated. According to them, the findings are of great importance for understanding the normal development of the brain. The findings may form the basis for the development of future treatments for brain cancer, for degenerative diseases of the brain such as Alzheimer's and Parkinson's, and for various brain injuries
Cross section of the zebrafish heart 30 days after injury. The injured site (marked by an arrow) without a scar in a fish with normal lymphatic vessels (left) but not in a mutant fish that does not have these vessels (right)

heart of a fish

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Dr. Takashi Kawashima and Dr. Mio Nonke. Photo: Weizmann Institute Spokesperson

The fish will play before us

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The hormone oxytocin (in purple) at the secretion points in the synapses (in green) in the transparent brain of a genetically modified zebrafish. Prof. Gil Levkovitch, Weizmann Institute

the love bubble

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The triumvirate of the neurohypophysis: phytocytes (in purple) scattered between the ends of axons (in green) and blood capillaries (in red)

Discovery: how certain blood vessels in the brain open "windows" that allow overcoming the blood-brain barrier

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Close-up of a zebrafish eye. A sophisticated and accurate vision system

A look at the fish's eye

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Zebrafish brain imaging results. Left: Optical fluorescence microscopy imaging provides only a blurred image limited to the surface. Right: The optoacoustic FONT approach, on the other hand, provides a high-resolution XNUMXD image and detailed information on the activity of the neurons (orange dots) in real time, all over the brain. Photo: Helmholtz Center, Munich.

A window to the depths of the mind

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The endothelial cells, which make up the blood vessels of the zebrafish embryo (in red). The cell nuclei are marked in yellow. The stem cell pool is marked with an arrow

Wandering with gut feeling

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From the right: Dr. Karina Yaniv, Guy Melkinson, Inbal Avraham-Davidi, Moshe Greenspan, Liron Gibbs Bar, Oded Meisels and Yona Eli. Dialogue. Photo: Weizman Institute

Dialogue in the dark

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