Related by context. Frequent words. (Click for all words.) 64 secretions 60 urine 60 bodily fluid 58 semen 58 bodily fluids 57 swab 54 swabs 54 seminal fluid 53 mucous 53 faeces 52 cotton swab 52 mucus 52 Saliva 51 droppings 51 saliva sample 50 DNA 50 DNA swab 50 swabbed 50 blood 49 DNA sample 49 perspiration 49 fecal matter 49 sputum 49 spinal fluid 48 feces 48 spittle 48 saliva samples 48 Urine 48 pheromones 47 cotton swabs 47 pheromone 47 bloodstream 47 nasal passages 47 fluids 47 bacteria 47 mouth swab 46 fecal 46 cotinine 46 stool samples 46 droplets 46 DNA samples 45 cerebrospinal fluid 45 tooth enamel 45 breast milk 45 mucous membranes 45 TB bacteria 45 tissues 44 stress hormone cortisol 44 phlegm 44 urine samples 44 hair follicles 44 swabbing 44 placenta 44 vomit 43 cheek swab 43 salivary glands 43 scent 43 amniotic fluid 43 cortisol 43 digestive tract 43 nostrils 43 viral particles 43 mouthwash 43 nasal discharge 43 secretion 42 pipette 42 Semen 42 polymerase chain reaction 42 serum 42 sweat glands 42 bacterial 42 germs 42 nicotine 42 DNA swabs 42 excreta 42 itchy skin 42 tissue samples 42 mucosa 42 dung 42 ejaculate 42 fingernails 41 fingerprints 41 nectar 41 fingerprint 41 antibodies 41 tissue 41 breastmilk 41 coughing sneezing 41 saline solution 41 snake venom 41 fatty tissue 41 pollen 41 sexual arousal 41 excrement 41 formic acid 41 mitochondrial DNA 41 hair follicle 41 nasal cavity 41 metal ions 40 gum 40 spit