The longest a person has survived after a heart transplant is 24 years.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Thyroid conditions may make getting pregnant impossible.
Types of isomers
Configurations of geometric isomers
Trans and cis isomers of a peptide bond involving the imino nitrogen of proline