Early weaning Late  weaning Pre-pubertal Adolescent Adulthood Aged-phase
Mean ±  SD Mean ±  SD Mean ± SD Mean ±  SD Mean ±  SD Mean ±  SD
Average area of collagen fibres 7.75  ±  2.14 8.0 ± 4.00   23.76 ±  4.63 20.24 ± 6.37 9.84 ± 2.91
Optic density of
elastic fibres
64.61  ±  0.23 64.71 ± 0.34 49.12 ±  0.49 44.06 ±  0.86 43.63 ± 0.75 43.74 ± 0.41
Epidermal thickness (µm) 48.02  ±  8.17 74.44 ± 5.35 76.02 ± 30.94 167.10 ± 20.88 28.56 ± 9.07 18.66 ± 4.39
Dermal thickness (µm) 417.9 ± 47.0 479.6 ± 35.4 1018.3 ±  32.8 1599.3 ± 107.4 729.03 ± 73.07 839.1 ± 37.2
Number of hair
follicles/field
71.80  ±  4.02 17.20 ± 0.44 26.80 ± 4.49 7.60 ± 1.67 8.20 ± 0.83 8.00 ± 1.22
Number of sebaceous glands/field 8.60  ±  1.34 3.20  ±  0.44 4.40  ±  1.34 4.20 ± 0.83 3.40 ± 0.54 3.20 ± 2.58
SD: Standard Deviation
Table 2: Mean and standard deviation of the skin measurements in the different studied groups