抄録
The morphological properties of the twelve previously described HM-phages were examined by electron microscopy. Specimens were prepared by air-drying and shadowcasting method using purified phage suspensions. As a result, the HM-phages were classified into three morphologically distinct groups, 1, 11 and 111. Group 1 phages were HM 1, HM 2, HM 8, HM 9, HM 10, HM 11 and HM 12. These phages had a spherical head about 100mμ in diameter and a rudimentary tail. Group 11 phages were HM 3, HM 4, HM 5 and HM 6. These phages had a spherical head about 100mμ in diameter and a tail with contractile sheath, and the normal tail of these phages was about 100mμ in length, and the contracted sheath was about 50mμ in length, Group 111 phage was HM 7 alone. This phage had a spherical head about 120mμ in diameter and a relatively long tail about 350mμ in length.
