One proposal is to use guayule, a shrub that grows in arid regions and produces rubber that is free from allergenic proteins, which makes it useful for items such as surgical gloves.

• 一种建议是种植银胶菊。银胶菊是一种生长在干旱地区的灌木，它产生的橡胶不含致过敏蛋白，可以用来生产手术手套一类的物件。