Page 33 - MNUmicrobiology practical 2025

General Microbiology & Immunology (PM 401) second level Semester 4 2024/2025

C- Division in three planes
• Sarcina: a cube
of 8 cocci

sarcina

D- Division in random planes
• Staphylococcus:
cocci in
irregular, often
grape-like
clusters

Staphylococcus aureus

Hint
• As you observe these different cocci, keep in mind that the procedures

used in slide preparation may cause some arrangements to break

apart or clump together.

• The correct form, however, should predominate. Also remember that

each coccus in an arrangement represents a complete, individual, one-

celled organism.

General Microbiology & Immunology (PM 401) Practical note Page 22