The hottest Stem Cells Substack posts right now

For an egg to develop into a healthy baby, it needs to have the right number of chromosomes and be free from harmful mutations. This can be checked using various genetic testing methods.
Eggs must also have proper epigenetics, meaning they need to erase the old marks from the starting cells and replace them with new ones specific to eggs. This part has been tricky for scientists.
Besides genetics and epigenetics, eggs need to be the right size and have enough nutrients and energy sources. To be useful, any method for growing eggs in the lab must make sure the eggs are consistently high-quality and safe.

Eggs are rare and expensive, which limits how many embryos we can select from for genetic improvement. Finding a way to effectively use sperm could change this.
The proposed method involves making eggs, removing their DNA, and then adding sperm to create cell lines. This lets us select the best genetic traits without wasting sperm.
This approach could improve the chances of getting better traits from the father side and could work even with low-quality techniques for making eggs.

High-pressure freezing method allows larger biospecimens to be imaged with less milling time.
New study maps neurotransmitter expression in the mouse brain, revealing diversity among neuron types.
Advances in neural recording technology now allow for full cortical depth recording in the brain.

Researchers have found a way to produce mouse eggs from stem cells, even without ovarian cells. This could lead to advancements in egg production technology.
The method shows that meiosis can occur in 2D cultures, making it easier to do research in the lab. However, the eggs produced currently can’t fully mature without ovarian support.
This study challenges previous beliefs about the necessity of ovarian cells for early egg development, which opens up new avenues for understanding and improving in vitro reproduction.

Engram cells undergo changes to store memories and trigger behaviors.
Inhibiting specific brain connections can affect decision-making.
Progress has been made in decoding attempted speech for people with facial paralysis.

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Playing the game versus using cheat codes can be applied to various situations like growing oocytes and making Pokémon.
Advantages of playing normally: it may take longer but strengthens understanding; button mashing can lead to quicker results but might have unforeseen issues.
In different scenarios, like making natural products or evaluating computer code, deciding between conventional methods or shortcuts is crucial.