<!-- ================================================================= -->
<!-- genetox DTD

    This is the Current DTD which NLM has written for
     external use.

    Comments and suggestions are welcome.
     2002/02/11

 -->
<!-- ================================================================= -->
<!ELEMENT genetox (DOC)+>
<!ELEMENT DOC ((DOCNO|NameOfSubstance|CASRegistryNumber|DateRevised|
acta|actb|asca|
ascb|asta|astb|
ccat|date|dosra|
dosrb|gtn|refa|
refb|resa|resb|
rpta|rptb|sexa|
sexb|spcta|spctb|
sy|tax)*)>
<!ELEMENT gena ((spcta|sexa|asta|asca|resa|acta|dosra|rpta|refa)*)>
<!ELEMENT genb ((spctb|sexb|astb|ascb|resb|actb|dosrb|rptb|refb)*)>
<!ELEMENT DOCNO (#PCDATA)>
<!ELEMENT NameOfSubstance (#PCDATA)>
<!ELEMENT CASRegistryNumber (#PCDATA)>
<!ELEMENT DateRevised (#PCDATA)>
<!ELEMENT acta (#PCDATA)>
<!ELEMENT actb (#PCDATA)>
<!ELEMENT asca (#PCDATA)>
<!ELEMENT ascb (#PCDATA)>
<!ELEMENT asta (#PCDATA)>
<!ELEMENT astb (#PCDATA)>
<!ELEMENT ccat (#PCDATA)>
<!ELEMENT date (#PCDATA)>
<!ELEMENT dosra (#PCDATA)>
<!ELEMENT dosrb (#PCDATA)>
<!ELEMENT gtn (#PCDATA)>
<!ELEMENT refa (#PCDATA)>
<!ELEMENT refb (#PCDATA)>
<!ELEMENT resa (#PCDATA)>
<!ELEMENT resb (#PCDATA)>
<!ELEMENT rpta (#PCDATA)>
<!ELEMENT rptb (#PCDATA)>
<!ELEMENT sexa (#PCDATA)>
<!ELEMENT sexb (#PCDATA)>
<!ELEMENT spcta (#PCDATA)>
<!ELEMENT spctb (#PCDATA)>
<!ELEMENT sy (#PCDATA)>
<!ELEMENT tax (#PCDATA)>