A polymerase chain reaction (PCR) test can be positive for up to 90 days after infection. The discrepancies between tests and the lengths of their positive results boil down to what each test ...

What is the Put Call Ratio? Put/Call ratio (PCR) is a popular derivative indicator, specifically designed to help traders gauge the overall sentiment (mood) of the market. The ratio is calculated ...

If you buy a multiunit property and plan to live in one of the units, you can finance it as a primary residence. If you don't plan to live in one of the units, you'll need an investment property ...

Three years ago, California passed SB 9, a law allowing duplexes on properties otherwise restricted to single-family homes. It also lets homeowners split their lot and sell off excess land ...

Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial ...

Department of Chemistry, New York University, New York, New York 10003, United States ...