Another baraita on the impact of blood on - in this case, a gourd of terumah - in terms of making it susceptible to impurity. Rabbi Yehudah HaNasi and Rabbi Hiyya have a debate about that. Of course, if there is blood and shechitah on the gourd throughout the process, that would render the gourd susceptible to impurity. But perhaps not if the process itself were interrupted. Also, Resh Lakish poses a question regarding a dry portion of a grain-offering - if/when would that become susceptible to impurity? Noting that it still would need to come in contact with water (or the other liquids) to achieve that. Note also the distinction between the impurity that comes from a dead body as compared to that from a creepy-crawly.