The Body's Tiny Defense System
When a sniffle strikes, two curious kids shrink down to meet the body's tiny defenders—white blood cells, antibodies, and more—as they discover how the immune system spots germs and fights them off.
El armazón oculto del cuerpo
Cuando un niño curioso se pregunta qué nos sostiene por dentro, una guía amable revela el sistema óseo.
Spanish version coming soon.
This story is not available in Spanish yet. You can keep reading in English, or check back soon for the Spanish PDF and quiz.
Spanish version coming soon.
This story is not available in Spanish yet. You can keep reading in English, or check back soon for the Spanish PDF and quiz.
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🔬 Science Element
El esqueleto humano está formado por 206 huesos que dan estructura, protegen órganos como el cerebro y el corazón, y trabajan con músculos y articulaciones para permitir el movimiento. Los huesos también almacenan minerales y producen células sanguíneas en su médula.
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