Abstract
Hemichordates are benthic marine invertebrates closely related to chordates. Several species, including Ptychodera flava in the phylum Hemichordates, can undergo whole body regeneration from a small fragment. P. flava is widely distributed in the warm Indo-Pacific region and is easily collected in the lower tidal zone of a shallow beach with a coral reef. Here, we describe the methods for animal collection and preparation of regenerating tissues. The prepared tissues can be used for various molecular and/or histological experiments. We also demonstrate how to examine gene expression patterns in the tissues using whole mount in situ hybridization.
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