Although I have a HEPA system, I don't usually use it unless I am doing agar work. If you are careful, if you douse your mushroom with disinfectant and then carefully split the stem up to the point where it attaches to an UNOPEN cap, you can pull a tiny bit of the core of the mushroom out as your cloning material. You can put this directly into a grain jar or you can place it on agar or you can put t into your lc. The problem is that it will most likely grrow from there unless you hae a way to pulverize it when it is already in the liquid. One way is to put bits of metal, tiny screws or sharp nuts and bolts, even glass shards will help, and shake them up. I use a special blender for a moment or two, no longer as you will damage the hypae to the point where they will not recover. Then use maddog's tec and you wll be fine, and have a monoculture to play with which is far more productive and predictable.