Having the rhesus factor.
- ‘Mrs Barclay suffers from rhesus disease, a blood disorder which occurs in around one in 100 women with rhesus negative blood carrying rhesus positive babies.’
- ‘Anti-D is given to rhesus negative mothers who have given birth to rhesus positive babies.’
- ‘In later pregnancies where the baby is also rhesus positive, the levels of these antibodies in the mother's blood rise rapidly.’
We take a look at several popular, though confusing, punctuation marks.