Comment on "Sterilizing immunity in the lung relies on targeting fungal apoptosis-like programmed cell death".

Shlezinger et al (Reports, 8 September 2017, p. 1037) report that the common fungus Aspergillus fumigatus, a cause of aspergillosis, undergoes caspase-dependent apoptosis-like cell death triggered by lung neutrophils. However, the technologies they used do not provide reliable evidence that fungal cells die via a protease signaling cascade thwarted by a fungal caspase inhibitor homologous to human survivin.