This study investigated the diversity of cyanobacterial mat communities of three meltwater ponds--Fresh, Orange and Salt Ponds, south of Bratina Island, McMurdo Ice Shelf, Antarctica. A combined morphological and genetic approach using clone libraries was used to investigate the influence of salinity on cyanobacterial diversity within these ecosystems without prior cultivation or isolation of c...

The potential of microalgae for steroid transformation has been studied less than other microorganisms. They have been applied for the years in the treatment of environmental pollutions and preparation of nutrients. At the first time, Abul-Hajj and Qian indicated the conversion of androstendione (AD) to testosterone with eleven different strains of microalgae. Previtera’s group showed the trans...

Chairmen: Fred Eggan and Daryll Forde. Papers discussed: Kluckhohn, «Universal Categories of Culture"; ~ Hoijer, «The Relation of Language to Culture";~ Martinet, "Structural Linguistics";~ Levi­ Strauss, «Social Structure"; ~ Boyd, «The Contributions of Genetics to Anthropol­ ogy";~ Steward, «Evolution and Process," Speakers: Eggan, Boyd, '''ashburn, Kluckhohn, Murdock,t Henry, HOijer, Ken­ na...

Lyophilizatin of 13 cyanobacterial cultures belonging to seven genera was attempted in a variety of suspending substances. All organisms survived lyophilization when suspended in lamb serum. Some of the organisms could be successfully lyophilized in horse serum, beef serum, fetal bovine serum, or human ascites fluid. With the exception of Nostoc muscorium, none of the organisms survived lyophil...