Bacterial Cell Shapes and Structures - Microbiology Illustration #3026539 (License: Personal Use)

This hand-drawn microbiological diagram illustrates key bacterial morphological types: spherical cocci (single, pairs, chains), rod-shaped bacilli (single and chains), spiral-shaped spirilla, and motile bacteria with peritrichous or polar flagella. The shading and fine linework emphasize surface texture and structural detail, aiding in identification and teaching. It reflects early 20th-century scientific illustration style, commonly used in textbooks before color microscopy became widespread.

Used in educational contexts-microbiology textbooks, university lecture slides, online learning modules-to teach bacterial classification by shape and motility. Matches user intent for visual reference when studying prokaryotic cell diversity or preparing for exams.