div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: RheinwaldGreen1977EpidermalrheinwaldlabbwhharvardedupdfRheinwaldGreen1977Reprinted from Nature vol 265 No 5593 pp 421—424 February 3 1977 G Macmillan Journals src=https:reader036fdocumentsusreader036viewer20220629075aaff47c7f8b9a190d8dfec6html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: RheinwaldGreen1977EpidermalrheinwaldlabbwhharvardedupdfRheinwaldGreen1977Reprinted from Nature vol 265 No 5593 pp 421—424 February 3 1977 G Macmillan Journals src=https:reader036fdocumentsusreader036viewer20220629075aaff47c7f8b9a190d8dfec6html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: RheinwaldGreen1977EpidermalrheinwaldlabbwhharvardedupdfRheinwaldGreen1977Reprinted from Nature vol 265 No 5593 pp 421—424 February 3 1977 G Macmillan Journals src=https:reader036fdocumentsusreader036viewer20220629075aaff47c7f8b9a190d8dfec6html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: RheinwaldGreen1977EpidermalrheinwaldlabbwhharvardedupdfRheinwaldGreen1977Reprinted from Nature vol 265 No 5593 pp 421—424 February 3 1977 G Macmillan Journals src=https:reader036fdocumentsusreader036viewer20220629075aaff47c7f8b9a190d8dfec6html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdiv