PT - JOURNAL ARTICLE AU - GREINER, A. C. AU - CHAN, S. C. TI - Melatonin Content of the Human Pineal Gland AID - 10.1126/science.199.4324.83 DP - 1978 Jan 06 TA - Science PG - 83--84 VI - 199 IP - 4324 4099 - http://science.sciencemag.org/content/199/4324/83.short 4100 - http://science.sciencemag.org/content/199/4324/83.full SO - Science1978 Jan 06; 199 AB - Gas chromatography with electron capture detection was used to quantitate melatonin in single human pineal glands. The sensitivity of this melatonin assay is in the low picogram range. A 24-hour rhythm of pineal melatonin content was observed.