COPD is a chronic lung disease with severe narrowing of the airways. Even administering medication cannot fully cure this narrowing. The model impressively shows the changes to the bronchial tissue (from bottom to top):
abnormal mucous secretion, thickening of the bronchial mucosa
3B Scientific® products are built to last. 3B Scientific® - manufactured products are covered by a limited warranty for a period of 3 years from shipment date against defects in material and workmanship. Products manufactured by anyone other than 3B Scientific® are subject to the statutory warranty in the country of sale. The 3B Scientific® warranty does not extend to any product that has been subject to transport damage, abuse, neglect, accident, improper installation or application or any use other than for the purpose for which it was intended. Consumables and limited-life products (such as, batteries, printed materials, etc.) are excluded. Additional warranty information is available upon request.
To return this item you must contact Customer Service within 14 days of receipt to obtain a valid Return Authorization Number. Restocking fees may apply at the discretion of the manufacturer.