In various past articles, I have discussed how healthcare can form an integral part of an investor's portfolio. This is due to the fact that it is a highly defensive industry that is resistant to change in the business cycle and yet still boasts relatively strong forward growth potential. These qualities may make it even more appealing in the current highly volatile market environment. One interesting way for investors to buy into the sector is through the use of closed-end funds, such as Tekla Life Sciences Investors (HQL). This method might be especially