Ключевые слова: 3d illustration, 3d, allergy, asthma, bed, bed linen, bedcover, carpet, cleaning, cleanliness, close, dirt, dust, dust mite, electron microscope, house dust, house dust mite, hygiene, illness, immune system, infection, insect, itching, macro, mattress, microscope, mite, parasite, pillow, schlafzimme, tick, transmission, vacuum,