Risus sardonicus

Known as: Rictus grin

Fixed sarcastic grimace and anxious expression. Caused by spasms of the masseter and other facial muscles. []

National Institutes of Health

Papers overview

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2014

2011

Tetanus, a disease so ancient that even Hippocrates spoke of it. Has it ceased to be or does it still exist? Does it still…

2006

If you’re leading but no one is following, you’re simply out for a walk; if you’re teaching but no one is learning, are you…

2006

Sirs: Tetanus is considered a major health problem in the developing and under-developed countries [1]. The normal time course of…

2005

For many of us, keeping up with the literature poses a never-ending challenge. We rely on word of mouth, “news and views…

2003

2002

This story is a chemical mystery with an emphasis on simple physical properties and chemical characterization of metals. It is…

1987

1985

Young (3–4 years old) laboratory‐reared rhesus monkeys were observed in five 15‐minute tests with 1–15‐day‐old infants. Males and…

1970

A case of localized tetanus (occasionally included in classification of cephalic tetanus) is reported in which the initial and…