AFM可以在单分子、单细胞水平上研究生物分子内和分子间的相互作用。
Intramolecular and intermolecular interaction of biomolecules can be carried out by AFM on the level of monomolecule and monoplast.
By AFM, intramolecular and intermolecular interactions of biomolecules can be investigated on monomolecule and monoplast levels.
The last two can be chosen as the answer.