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The cell repairs the DSB through two competing mechanisms:

This phenomenon is called the Baader-Meinhof phenomenon, also known as the frequency illusion or the availability heuristic. It's a cognitive bias that explains why we tend to notice patterns or things more frequently after we've been exposed to them.

Potassium is essential for your body to function. However, a small fraction of naturally occurring potassium is actually the radioactive isotope Potassium-40.

Maintaining a framework that is completely science becomes challenging when research interacts with commercial interests, government public policy, or human society. The Challenge of Commercial Funding completely science

For example, when you learn about a new type of car, your brain creates a new pattern recognition template for that car model. Then, when you're driving, your brain uses that template to quickly recognize the car model, making you more likely to notice it on the road.

The Baader-Meinhof phenomenon is related to several cognitive biases, including:

The story begins with a German linguistics student named Wilfried Wilhelmus Baader, who in 1994 wrote about a phenomenon he had observed. He noticed that after learning about a new linguistic term, he started seeing it everywhere in texts and conversations. He shared his observation with a friend, Horst Meinhof, and they both started discussing the phenomenon. The cell repairs the DSB through two competing

The Universe is weirder than fiction. 🌌🔬

CRISPR-Cas9 represents a paradigm shift in molecular biology, offering unprecedented precision in genome manipulation. Its natural bacterial origin has been harnessed into a versatile tool with validated clinical applications. Despite remaining challenges in off-target effects and delivery, iterative protein engineering and novel repair strategies continue to expand its safety and utility. The technology will likely underpin future therapies for genetic disorders, infectious diseases, and regenerative medicine.

The Baader-Meinhof phenomenon occurs because our brains are wired to recognize patterns. When we're exposed to something new, our brain creates a new connection between neurons to store that information. After that, our brain becomes more sensitive to that information, making us more likely to notice it in the future. However, a small fraction of naturally occurring potassium

Cas9 can tolerate mismatches between the sgRNA and DNA, especially in the PAM-distal region. This risks unintended mutations in functional genes, potentially causing oncogene activation. Engineered high-fidelity variants (eSpCas9, SpCas9-HF1) reduce off-target activity by >90% while retaining on-target efficiency.

In nature, bacteria use CRISPR-Cas9 to defend against viral infection (bacteriophages). When a bacterium survives a viral attack, it integrates a short fragment of the viral DNA into its own genome at the CRISPR locus. This locus then transcribes CRISPR RNA (crRNA) that guides the Cas9 nuclease to recognize and cleave any matching viral DNA upon reinfection.