@thebiohackhub: 🛡️ What is an Antigen? 🧬 A simple definition: An antigen is any substance that triggers an immune response. 💥 🔹 It can be: ✅ A virus. ✅ A bacterium. ✅ A toxin. ✅ Or even a foreign molecule. ✨ Antigens are the key players in helping your immune system recognize and fight invaders! 👉 Follow for more simplified biotech insights! 🌱 #biotechvisuals #biotech #biotechbasics #sciencesimplified #biologyexplained #lifesciences #learnbiotech #scienceforeveryone