[R] circlize package: different font size for axis labels

[Fix Ace]

Hi, Dr. Gu,
I am trying to highlight some axis labels, for example, "72hL3" as bold, using the following command: 

circos.initialize(factors=female.f, xlim=c(1.8,6.2))
circos.trackPlotRegion(factors=female.f,
ylim=c(-1.3,1.8),track.height=0.5,panel.fun=function(x,y){circos.axis(major.at=c(2:6),minor.ticks=0,labels=c("L3","72hL3","72hL4","8dF","16dF"),labels.cex=0.8,major.tick.percentage=0.02,h="bottom",
direction="inside", labels.font=c(1,2,1,1,1,1))})Is there a way to do this using circlize package?
Thanks!

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