instruction:
In this task, you are given a sentence. You are expected to write the name of the organism substances in the body mentioned in the input. Although there might be several correct answers, you need to write one of them.
question:
 Our data suggest that yolk - DNA arises by the adventitious uptake of DNA present in the maternal serum by vitellogenic oocytes .
answer:
serum


question:
 It was concluded that when the MLP - NN is used within the range studied , the optimized NN is able to estimate the beta - carotene and lycopene concentrations in food samples with an adequate accuracy , solving the UV - vis interference of beta - carotene and lycopene .
answer:
samples


question:
 Lower peak blood ethanol concentrations after 1 and 2 g of ethanol per kg were found in pregnant rats than in virgin females .
answer:

blood


