The nitrogen, phosphorus, potassium, calcium and magnesium which are essential to plant growth come in hundreds of different forms. With so many "recipes" available, researchers trying to prepare the most "nutritious" menu, to encourage the yew cells to eat their fill and to grow quickly, must rely on experience, patience and constant experimentation.
植物生長要素氮磷鉀鈣鎂有上百種，研究人員要在這麼多「菜色」中，調配出最「營養」的菜單，讓紅豆杉細胞願意飽餐且快速成長，靠的就是經驗、耐心不斷調製。