TABLE 2.

Amphotericin B concentration threshold as defined in the text for DMPC, egg lecithin, and the bacterial lipids formed at the tip of a micropipette (<1 μm²) in the presence or absence of sterols and different temperatures

	AmB concentration threshold (M)
	DMPC*	Egg lecithin		E. coli IOM
Sterol	30°C	25°C	15°C	25°C	15°C
0 mol %	10−4	10−4	10−5	>10−4	10−5
Chol 30 mol %	10−7	10−6		10−5
Erg 30 mol %		<10−7

The membrane potential and buffer used are those quoted in Table 1. Chol, cholesterol; Erg, ergosterol.

^*Cotero et al. (1998).