I am reading a paper about miRNA and confused by a fig. 
![enter image description here][1]


  [1]: http://i.imgur.com/yKXw8Ja.png

In "Novel miRNA for which miRNA* were found", what does miRNA* mean in the context?
Does it mean reverse-complement sequence of miRNA?

I hope someone could give me some suggestions.
miRNA* refers to the antisense sequence to the mature miRNA. miRDeep classifies miRNA reads based on the location of reads in the pre-miRNA: miRNA (mature miRNA sequence),  miRNA* (as sequence of miRNA), and loop (matching loop region of pre-miRNA hairpin).