Summary The GI-101 human breast tumour xenograft line is unique in that it spontaneously metastasises to the lungs of athymic murine hosts from subcutaneous trochar implants. Both tumour and lung metastases are positive for normal human breast tissue markers. GI-101 also is positive for the p53 antigen but negative for the c-erbB-2 oncogene.
Alkaline phosphatase activity in Oscillatoria erythraea (Trichodesmium) has been repeatedly demonstrated at the time of collection of the alga from the low‐nutrient waters of the Strait of Florida, suggesting a mechanism of fulfilling a phosphate requirement complementary to the capacity of this species to fix nitrogen.
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