An electric outdoor power machine includes a machine body supported by wheels and having an output member driven by a motor. , when the elemental composition ratio of Al, Mg, Ti and Si in the mixture is represented by compositional formula :Al2MgxTiO5+aAl2O3+bSiO2 \u2003\u2003,x satisfies 0. In one illustrated embodiment, the biologically active protein is an antigenic epitope and upon administration to the animal the algal cell induces an immune response in the host animal.