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Cells

Mouse, rabbit and human embryos (right to left) in the same developmental stage - gastrulation (days 8-7.5 of pregnancy in rabbits and mice and around day 18 of development in humans). At this stage the human, rabbit and other vertebrate embryos are almost flat disc-shaped, while the mouse embryo is elongated cylinder-shaped. The images of the mouse and rabbit embryos were created as part of the current study, the image of the human embryo is taken from a study published in 2021 (Richard CV Tyser et al. Single-cell transcriptomic characterization of a gastrulating human embryo. Nature 600: 285-289)

In the rabbit hole

The institute's scientists developed a method that allows real-time monitoring of the development of embryos at the beginning of their journey and applied it for the first time to rabbits. The comparison they made between embryonic development in rabbits and mice gave rise to answers to fascinating questions about the formation of humans
Photo 190541348 | Virus © Ponsuwan | Dreamstime.com

The coronavirus toolbox

About two components that help COVID-19 make its proteins and multiply
Bacterial cells before phage infection (left) and after (right). The virus replicates itself inside them and leads to the explosion of the cells and the spilling of their contents (in red - the bacterial DNA spilled from the cell)

Survive with 0% battery: an immune system that drains the cell of energy has been discovered

The new system was discovered in bacteria - but is also used in corals, bees and others
Left: cells with a mutant FUS protein that causes accumulations (in green) and leads to ALS disease. Right: the cells with the protein/chaferon (in pink) that manages to prevent the accumulations

fight degenerative diseases

The proteins and mechanisms required to fight the protein accumulations that lead to neurodegenerative diseases have been identified
Mouse brain tissue. The octopus-like microglial cells are marked in red. In green - blood vessels. Courtesy of the Weizmann Institute

calm the microglia in the brain

In degenerative brain diseases, Alzheimer's for example, there is an overactivity of the representatives of the immune system in the brain. Weizmann Institute of Science scientists have revealed the mechanism that allows these cells to return to normal
Microscope image of yeast cells. Mitochondrial organelles (indicated in red) are attached to peroxisomes (in light blue) by tiny "ribbons" (in green). Illustration: Weizmann Institute

No organ is an island

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Image: pixabay.

Molecular amnesty

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"Throughout evolution, the cells that knew how to produce proteins in the most 'cheap' way acquired a huge advantage. You can say that the one who was the most economical survived." Source: Weizmann Institute magazine.

A traffic light of bacteria

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Thyroid cancer cells. Source: NASA / Team Daniela Grimm.

Researchers have developed a new approach to the targeted elimination of aggressive cancer cells

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The upper part from the original photograph from the study: in both photographs, animal cells from two populations are visible - one was colored red and the other green. The purple color paints the cell cytoplasm, while the green color paints the cytoplasm and the cell nucleus, which is seen as a circle with a denser color in the cells. In the top photo, each cell maintains its separate identity. Credit: Technion barges.

Researchers publish dramatic findings concerning the intercellular fusion process

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Image: Darryl Leja, NHGRI/flickr.

between darkness and light

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Nerves. Source: MR McGill / flickr.

to the end of the cell and back

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Rat brains. Photo: B.G. Negev and Ben Gurion University

B.G. Negev will present at the Biomed conference peptides that help stop cell death

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Prof. Assaf Friedler. Photocopy: The Hebrew University

Good news for cancer patients: a new method for causing programmed cell death paves the way for the development of cancer treatment

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After the division of the simple model cell, one of the daughter cells inherits only one type of lipid (red) and most of the protein fragments (blue), while the other daughter cell inherits two types of lipids (red and green). Image: See link to the source of the image at the end of the article

New insights into the mechanism of cell division

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From the right: Dr. Amnon Buxboim, Dr. Shirley Dauba, Prof. Roi Bar-Ziv and Dan Bracha

Dense in the genome

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From the right: Dr. Anat Shmoeli, Prof. Orli Rayner, Dr. Tamar Sapir and Michal Segal. transport

grease

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Courtney Park, the first among the authors of the article

How is ATP broken down in cells

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The computer we have in every cell

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This week it's happening: the ceremony of awarding the Nobel Prize in Chemistry to Prof. Ada Yonat

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How do DNA coils Individuals join together

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Ithuran system of the body

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The ribosome: the key to life at the atomic level part XNUMX

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The ribosome: the key to life at the atomic level part XNUMX - Ada Yonat - the persistent pioneer

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The Ribosome: The Key to Life at the Atomic Level Part II

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