Las diatomeas constituyen un grupo taxonómico de microbios exitosos, que exhiben una alta diversidad en hábitats marinos. epibiontes marinas también despliegan importante asociaciones simbióticas. Se analizaron muestras red fitoplancton localidades del Pacífico mexicano, estuvieron representadas por especies planctónicas, y adicionalmente se observaron tres epizoicas: Protoraphis hustedtiana, P...

Medicinal use of the opium poppy (Papaver somniferum L) has ancient history, but the isolation of morphine was not described until the early nineteenth century. Morphine is the most important alkaloid of opium poppy in the last 50 years. In the morphine pathway has been reported to generate morphine in this species, CODM has a crucial role as the gene coding the enzyme respons...

(a) Centro Studi e Ricerche E. Fermi, Compendio Viminale, I-00184, Roma, Italy, (b) CERN, Theory Unit, Physics Department, 1211-CH Geneva 23, Switzerland, (c) DISTA, Università del Piemonte Orientale, via Bellini 25/g, I-15100, Alessandria, and INFN Torino, Gruppo Collegato di Alessandria, Italy. (d) Arnold Sommerfeld Center for Theoretical Physics Ludwig-Maximilians-Universität, Theresienstraß...