Prepubertal gynecomastia and chronic lavender exposure: report of three cases.

Introduction: Prepubertal gynecomastia is a rare condition characterized by the growth of breast tissue in males as a consequence of early exposure to sexual hormones. When this condition is present, pathological sources of testosterone/estrogen production, such as adrenal or gonadal tumors must be searched for. A few reports have described an association between gynecomastia and substances that produce stimulation of the estrogen receptor, such as lavender and tea tree oil.

Nanoporous zeolite film electrodes.

Nanoporous and oriented zeolite A films have been synthesized on tin oxide substrates. The films can be modified to reject or pass molecular oxygen to an underlying electrode; films such as these show great promise for template-assisted growth of nanostructures.