How White Blood Cells Protect Your Body

Create a 30-second vertical 9:16 medical whiteboard animation for Facebook Reels, targeting a USA audience. TOPIC: How White Blood Cells Protect Your Body. VISUALS: Use a clean pure white background. A realistic human hand holding a red marker must physically move across the screen and draw each medical illustration and label step by step, just like a real educational drawing video. Show a large white blood cell, bacteria, and the immune cell attacking harmful germs. Draw each illustration progressively while the explanation is being spoken. VOICEOVER: Use a natural American English female voice. Speak clearly, with correct pronunciation, synchronized with each drawing. SCRIPT: “Did you know your body has its own defense system? White blood cells help protect you from harmful germs. Different types have different jobs. Some attack invading microbes, while others help your immune system recognize threats. Your immune system works every day to help keep you healthy.” STYLE: Realistic marker-drawing hand, smooth natural hand movement, scientifically accurate medical illustrations, large readable English labels, clear educational presentation, 1080p, vertical 9:16 format. IMPORTANT: The hand must visibly draw the illustrations stroke by stroke. Do not simply reveal finished images. Do not show a talking person. Do not use a slideshow. Keep the voiceover synchronized with the drawing. No spelling mistakes or misleading medical claims.