Microarraying head and microarrayer

摘要

A microarraying head 51 has a base portion 57 and a plurality of needles 53 . The needles 53 are arranged in parallel with one another on the base portion 57 . The needles 53 place a solution on substrates 3 with the top ends of the needles 53 touching substrates 3 . Then, the needles 53 retain the solution including biological samples and form spots of the solution on the substrates 3 . A space 58 for supplying cleansing fluid or the like is provided in the base portion 57 so as to extend all over the plurality of needles 53 . Since the plurality of needles 53 can be all cleansed with substantially uniform pressure applied thereto, all the plurality of needles 53 can cleansed surely in a short time.