A (donor sperm) can be frozen.Logical formLearned from4 sentences. Sperm may undergo a manufacture.Logical formLearned from4 sentences. A drop may pertain-to a sperm.Logical formLearned from4 sentences. Exchange of sperm may take place.Logical formLearned from4 sentences. A toll can be on an ability of sperm.Logical formLearned from4 sentences. A (sperm bank) may run_out of vials.Logical formLearned from4 sentences. A sperm may swim through water.Logical formLearned from4 sentences. A protein can be vital to (sperm formation).Logical formLearned from4 sentences. Folate may be linked to some sperm.Logical formLearned from4 sentences. Sperm can be from a (sea urchin).Logical formLearned from4 sentences. A sperm may fertilize an (egg cell).Logical formLearned from4 sentences. Persons may have sperm.Logical formLearned from4 sentences. Images can be constituted-of-or-filled-with sperm.Logical formLearned from4 sentences. Women may buy a sperm.Logical formLearned from4 sentences. A sperm can be from males.Logical formLearned from4 sentences.