Biological ice mabhegi, anozivikanwawo semafiriji mabhegi echando, ane inotonhora yekuchengetera basa uye anowanzo shandiswa kutakura kurongedza chikafu, mushonga, zvekuzora uye zvimwe zvigadzirwa zvinoda kuiswa mufiriji kana kuchengetwa zvinyoro.Inowanzo shandiswa pamwe chete nemidziyo yakavharidzirwa.