Darwin Core record tissue detector. Looking for tissue indicators in the Darwin Core term 'preparations'.

has_tissue.py

def has_tissue(rec):
    if rec.has_key('preparations'):
        tissuetokens = ["+t", "tiss", "blood", "dmso", "dna", "extract", "froz", 
                        "forzen", "freez", "heart", "muscle", "higado", "kidney",
                        "liver", "lung", "nitrogen", "pectoral", "ri\x96on",
                        "kidney", "rnalater", "sample", "sangre", "toe", "spleen"]
        for token in tissuetokens:
            if token in rec['preparations'].lower():
                return True
    return False