Atopic dermatitis Seborrheic dermatitis Granular parakeratosis Tineapedis
# of specimens 40 13 3 6
S. aureus 17 8 2 4
S. epidermidis  8 2 0 1
Other staphylococci 15 3 1 1
XTT assay 40/40 [34/40 strong] 13/13 3/3 6/6
Congo red culture 40/40 13/13 3/3 6/6
IcaD gene 37/40 12/12 3/3 6/6
aap gene 1/40 1/1 0/0 0/0
H and E stain 36/36 13/13 3/3 3/3
PAS stain 36/36 13/13 3/3 3/3
Congo red stain 36/36 0/0 0/0 1/1
TLR2 immunostain 10/10 1/1 0/0 1/1
Table 1: Microbiology and pathology findings (Atopic dermatitis patients previously presented; shown for comparison). Rows 1,2 3- staphylococcal speciation; rows 4,5-biofilm assays; rows 6,7-genetic analyses; rows 8,9,10,11-pathology. Other identified staphylococci species included hominis , xylosus , warneri , simulans , caprae , chromogens , auricularis , and capitis . Multiple sections were occasionally required to observe occluded ducts on histopathologic examination.