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Cord blood is better than bone marrow for generating megakaryocytic progenitor cells.

L. Gaudry, A. Rice, H. Tao, 1999, Experimental hematology.

A randomized, double-blinded, placebo-controlled trial of oral Polypodium leucotomos extract as an adjunct to sunscreen in the treatment of melasma.

L. Hynan, A. Pandya, R. Vasquez, 2013, JAMA dermatology.