This hormone (it's not actually a vitamin) has receptor sites in every area of the body including the immune system and respiratorytissue.
维生素d(其拭魅这是一种激素)几乎在身体的每一处都有受点，搜罗免疫系统和呼吸组织。
2
Transmission is thought to have occurred via respiratory droplets, contact with throat or nasal secretions from the pigs, or contact with the tissue of a sick animal.
据认为，该病毒通过呼吸道产生的飞沫、与猪的喉咙或鼻腔分泌物接触，或与染病动物的组织接触进行传播。
3
Objective:To observe the effect of overdose asiasarum to SD rats lung tissue and respiratory function.