| BEDBUGS | What suckers of human blood dwell in unclean sleeping places? (7) |
| DUTY | Scrubbing centrepiece in unclean office (4) |
| CIGARETTE | Roll up for what suckers buy by the score (9) |
| STRAW | What sucker needs a politician? (5) |
| TEATOWEL | What sucker would use old source, briefly, that's got to dry up? |
| TYPEO | Like about 45% of human blood |
| RHESUSFACTOR | Determinant of human blood types (6,6) |
| PLASMA | Watery yellow fluid that makes up approximately 55% of human blood (6) |
| TYPEAB | Like about 4% of human blood |
| RHESUS | The determination of the "Rh" factor in human blood involves reaction with the blood of this monkey |
| BEDROOMS | There's space in the county, in short, for sleeping-places (8) |
| HARVEY | Physician to James I, Charles I and Francis Bacon whose landmark book De Motu Cordis published in 1628 describes his discovery of the human blood circulation system (6) |
| ABO | ___ system (way of classifying human blood) |
| OFFSHOOT | In horticulture, a ratoon, runner, slip or sucker of a plant (8) |
| SKIPPERS | Word for barns as sleeping places; captains of teams; dancers; darting butterflies; masters/mistresses of small ships; rope-jumpers; or, sauries (8) |
| COLONISTS | Settlers disturbing lions in sleeping places (9) |
| CRIBBED | Cheated, in two different sleeping places! |
| BERTHS | Sleeping places in ships or trains |
| KARLLANDSTEINER | Austrian-born US immunologist who discovered the human blood groups; Nobel Prize in Physiology or Medicine (1930) (4,11) |
| TROLL | One of a class of supernatural creatures in Scandinavian folklore that dwell in caves and mountains (5) |
