🧠 Key Terms Explained
| Term | Meaning |
| Differentiate | Change into a specific cell type |
| Self-renew | Make identical copies of itself |
| Zygote | First cell formed after fertilization |
| Blastocyst | Early-stage embryo |
| Transcription factors | Proteins that control gene expression |
| Teratoma | A type of tumor with different cell types |
| Immune rejection | Body attacks cells from another person |
🎓 Final Summary:
“Dear IAA Academy students, stem cells are nature’s building blocks. Just like how a construction site uses basic bricks to build anything – a hospital, a school, a home – your body uses stem cells to build muscle, brain, and even heal itself. Learn the types well, use the mnemonics, and think of real-life examples — that’s how science becomes meaningful!”