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Product Number: SB42962G
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This four-stage cross section of the bronchus demonstrates the tissue changes occurring in asthma and chronic bronchitis. The four stages include: normal bronchus, hypersecretion of the mucous glan... More. |
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Product Number: SB41444G
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Showing the following features: Larynx Trachea with bronchial tree 2-part heart (removable) Vena cava Aorta Pulmonary artery Esophagus 2 lung... More. |
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Respiratory System Model Activity Set Product Number: SA02748G
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Model of upper human torso focuses on study of heart and lungs in the respiratory system. Lungs, trachea, and alveoli are enlarged and shown in cross section. The 18" x 24", three-dimension... More. |