The gemorah towards the end of Daf 21b says that a Zav that sees Keri needs tevillah (for Divrei Torah -- even though it won't be mtahar him from the status of being a Zav.) It says also an isha that is poletes shicvas zera and then becomes a niddah also needs tevillah. For what reason does she need tevillah? For Limud HaTorah? What Torah is she learning? For Tefillah? Does this go back on the din of bal keri from the mishneh before that an isha would also have all the same dinim for?
Yehoshua, Yerushalayim, Eretz Yisrael
1. Rashi on the Mishnah (26a, DH Zav) writes that the Nidah who was Poletes Shichvas Zera requires Tevilah in order to be able to recite Tefilas Shemoneh Esreh.
2. The Tiferes Yisrael (3:35) adds that without Tevilah she is forbidden to learn Torah, to say Keri'as Shema or any Berachah.
3. We can see what Torah women learn from the Shulchan Aruch (Orach Chaim 47:14) which states that women recite Birkas ha'Torah. The Bi'ur Halachah there (DH Nashim) writes that this is because they must learn the laws that are relevant to them. In addition, they must say Parshas ha'Korbanos in the same way that they recite Shemoneh Esreh. We see from this that reading the passage in the Torah dealing with the Korbanos is considered like studying Torah.
4. We see therefore that an Ishah also possesses the Din of a Ba'al Keri.