Hah. I even still work with them. Here are some different types from our lab. https://blossom.primal.net/1b964d72e1f5b152ea8ef8c9fb21395cfb52eead881eac0c08cd1e078ee45927.jpg https://blossom.primal.net/acd0a15beae8a336752416e4c7162be94ea325d7911ffa9b49f21943015b2a1e.jpg