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(a) Force curve on a live S. aureus cell, showing the shape of the curve at high indentation. (b) Log-log plot of 0.074 Nm−1 measured cantilever spring constant force curve, confirming two discrete gradients in the contact part of the curve. (c) Histogram showing two discrete measurement groups, the cell wall stiffness, and the whole-cell compression stiffness (bin size = 0.001 Nm−1).
