ｐａｔｚｒ ｒａｄｉｏ ｏｎｅ ｈｕｎｄｒｅｄ ａｎｄ ｆｉｆｔｙ－ｏｎｅ - very specific cell culture medium supplement needs

episode one hundred and fifty-one / "well, Baz, I've got to go - I've just got here"