Doctor with camera 2.0

05/03/2026

AN IRANIAN MISSILE SLIPPED THROUGH…

Dramatic video footage of an Iranian missile strike in Israel.

Emergency teams are on-site to extract residents from damaged and collapsed structures.

05/03/2026

Supersonic Hit On Exact Location 💯

03/03/2026

بھگوان کا دیا ہوا سب کچھ ہے، پیسہ عزت اور ایٹمی پاور،
‏بس دشمنوں کی کمی ہے۔۔۔😎

‏کِم جونگ ان

03/03/2026

CRAZY FOOTAGE OF IRANIAN CLUSTER WARHEAD MISSILES HITTING TEL AVIV HARD

03/03/2026

ریاض سعودی عرب

03/03/2026

نیوز 🚨 ایک گھنٹہ قبل ایران کا تل ابیب پر انتہائی طاقتور میزائل سے حملہ !

28/02/2026

Mini human heart models reveal early steps that lead to atrial fibrillation

Scientists have developed tiny three‑dimensional human heart organoids that mimic important features of the human heart and used them to study atrial fibrillation, a common and serious heart rhythm disorder. Atrial fibrillation occurs when electrical signals in the upper chambers of the heart become chaotic, causing irregular heartbeats that can lead to stroke, heart failure, and other complications. Traditional models have struggled to capture the complexity of human heart tissue, but these lab‑grown organoids provide a more realistic environment to observe how heart cells behave and communicate.

In the study, researchers exposed the organoids to stressors that are known risk factors for atrial fibrillation, such as inflammation and oxidative stress. The organoids developed irregular electrical activity similar to what is seen in patients, showing that they can replicate early changes associated with the disorder. By analysing how the heart‑like tissue responded, the team identified patterns of gene expression and cellular behaviour linked to the development of arrhythmia. This approach could help uncover how atrial fibrillation begins at the cellular level and why some hearts are more vulnerable than others.

Using human heart organoids in this way creates a powerful tool for testing new drugs and interventions, potentially speeding up the discovery of therapies that prevent or correct faulty electrical signalling before atrial fibrillation becomes severe.

Research Paper 📄
DOI: 10.1016/j.stem.2025.09.011

28/02/2026

Nsc photograpy

28/02/2026

04/01/2026