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| {| class="wikitable mw-collapsible mw-collapsed"
| | [[Puberty_Development#Tanner_Stages|Tanner stages]] |
| ! colspan=4|Tanner Stages
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| ! width=60px|Tanner Stage
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| ! width=220px|Genitals (male)
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| ! width=220px|Breasts (female)
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| ! width=220px|Pubic hair (male and female)
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| | valign=top|<center>'''I'''</center>
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| | valign=top|prepubertal (testis volume < 1.5 ml<br>small penis (3 cm or less) <br>(age 9 and younger)
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| | valign=top|no glandular tissue<br>areola follows the skin contours of the chest (prepubertal)<br>(age 10 and younger)
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| | valign=top|no pubic hair at all (prepubertal state)<br>(age 10 and younger)
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| |-
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| | valign=top|<center>'''II'''</center>
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| | valign=top|testis volume 1.6 to 6 ml<br>skin on scrotum thins, reddens and enlarges<br>penis length unchanged<br>(age 9–11)
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| | valign=top|breast bud forms<br>with small area of surrounding glandular tissue<br>areola begins to widen<br>(age 10–11.5)
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| | valign=top|small amount of long, downy hair with slight pigmentation at the base of the penis and scrotum (males) or on the labia majora (females)<br>(age 10–11.5)
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| |-
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| | valign=top|<center>'''III'''</center>
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| | valign=top|testis volume 6 to 12 ml<br>scrotum enlarges further<br>penis begins to lengthen to about 6 cm<br>(age 11–12.5)
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| | valign=top|breast begins to become more elevated<br>and extends beyond the borders of the areola, which continues to widen but remains in contour with surrounding breast<br>(age 11.5–13)
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| | valign=top|hair becomes more coarse and curly<br>begins to extend laterally<br>(age 11.5–13)
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| | valign=top|<center>'''IV'''</center>
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| | valign=top|testis volume 12 to 20 ml<br>scrotum enlarges further and darkens<br>penis increases in length to 10 cm and circumference<br>(age 12.5–14)
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| | valign=top|increased breast size and elevation<br>areola and papilla form a secondary mound projecting from the contour of the surrounding breast<br>(age 13–15)
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| | valign=top|adult–like hair quality<br>extending across pubis but sparing medial thighs<br>(age 13–15)
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| | <center>'''V'''</center>
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| | valign=top|testis volume > 20 ml<br> adult scrotum and penis of 15 cm in length<br>(age 14+)
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| | valign=top|breast reaches final adult size<br>areola returns to contour of the surrounding breast<br>with a projecting central papilla<br>(age 15+)
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| | valign=top|hair extends to medial surface of the thighs<br>(age 15+)
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| |-
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| | colspan=3|'''Links:''' [[Puberty Development]] | [[Genital System Development]] | [[Genital - Female Development|Female]] | [[Genital - Male Development|Male]]
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| | colspan=3|Note that while typical ages are shown in brackets within the table, this is '''not a system for determining age'''.
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| | colspan=3|Based upon W.A. Marshall and J.M. Tanner, published stages for girls (1969 {{#pmid:5785179|PMID5785179}}) and boys (1970{{#pmid:5440182|PMID5440182}}).
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| |}<noinclude>[[Category:Genital]][[Category:Puberty]][[Category:Template]][[Category:Table]][[Category:1970's]]</noinclude>
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