One senses a lack of oxygen in tissue, which is a sign of a tumor.
When that happens, the brain's built-in alarm to breathe doesn't go off, despite a lack of oxygen.
"She had her neck compressed and that was the cause of a lack of oxygen to the brain, " he said.
The Department of Culture, Arts and Leisure said it believed the fish died due to low water levels, increased temperature and a lack of oxygen.
The court was told on Friday that Mr Macia had suffered extensive injuries, culminating in hypoxia - a lack of oxygen supply to the body - causing his death.
However, expert witness Dr Jean Keeling told the hearing on Wednesday that damage to the baby's heart, brain and lungs was evidence of a lack of oxygen caused by interference with his breathing.
BBC: NEWS | UK | Northern Ireland | Baby 'was starved of oxygen'
The current U.S. astronaut aboard Mir, Mike Foale, has put on a happy face despite the setbacks, but CNN has been told a lack of oxygen and a surplus of carbon dioxide may have contributed to a series of onboard mistakes which threatened the health of the station and could have killed the crew.
He gave the cause of death as brain damage caused by a severe lack of oxygen due to anaemia.
Klimeck died Sunday after spending more than two weeks in a medically induced coma due to extensive brain injuries from a prolonged lack of oxygen after accidentally hanging himself, according to the Hospital Santa Casa de Misericordia, in the neighboring city of Itapeva.
Dr Grieve said this could have been Dr Kamal desperately trying to fight off her attacker at first but was also likely to be a seizure brought on by the lack of oxygen to her brain.
Thomas died due to lack of oxygen, and Dr Whittington recorded a verdict of death by natural causes aggravated by neglect.
During the same season as Bunting's army expedition, David Sharp, a 34-year-old British climber died of cold, exhaustion and lack of oxygen on his descent from the summit.
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