An upper end portion of a seat backrest and a lower end portion of a head rest are superposed together. The LED unit has an LED chip and a light transmissive encapsulant encapsulating the LED chip. The thermally sprayed coatings of this invention provide enhanced wear and corrosion resistance for articles used in severe environments, pot rolls, and work rolls for paper processing). The motile sperm, having passed through the constriction, swim against the flow and collect in a harvesting zone at the distal end of the conduit, from where they can be aspirated. The first layer defines a first outer surface of the blood product and the third layer defining a second outer surface of the blood product. The continuous phase comprises at least one filler.