5.4: Cell identification

Question 1

What are 3 differences between dog and cat erythrocytes?

Answer 1

• Dog erythrocytes have a central area of pallor; in cats this is generally not visible.
• Cat erythrocytes are smaller in size compared to dog erythrocytes
• Anisocytosis is usually present in cats, whereas dog erythrocytes are more uniform.

Question 2

Answer 2

Band neutrophil

Question 3

2

Answer 3

Monocyte

Question 4

3

Answer 4

Neutrophil

Question 5

Answer 5

Eosinophil

Question 6

Answer 6

Platelet

Question 7

Answer 7

Lymphocyte
Round nucleus and little or no cytoplasm.
A less typical lymphocyte is seen on the RHS.

Question 8

7

Answer 8

Neutrophil

Question 9

8

Answer 9

Eosinophil

Question 10

9

Answer 10

Lymphocyte

Question 11

10

Answer 11

Platelet

Question 12

11

Answer 12

Neutrophil

Question 13

12

Answer 13

Eosinophil

Question 14

Answer 14

Stain precipitate

Question 15

Answer 15

Hypochromasia
Seen in iron deficiency anaemia

Question 16

Answer 16

Heinz bodies

Question 17

Answer 17

Acanthocytes

Question 18

Answer 18

Spherocytes

Question 19

What is your observation from this blood smear?

Answer 19

There is a marked leucocytosis present. The predominant WBC type is lymphocytes.

Question 20

Does this slide show evidence of regeneration?

Answer 20

Yes - this is a regenerative anaemia, as we can see from the degree of polychromasia in the indicated cells.

Question 21

Does this slide show evidence of regeneration? What condition are you suspicious of?

Answer 21

• No evidence of regeneration (no polychromasia)
• Arrow = agglutinated erythrocytes.
• Likely: IMHA.

Question 22

What is your observation from this blood smear?

Answer 22

Marked neutrophilia with left shift and mild toxic changes

Question 23

1

Answer 23

Basophil

Question 24

2

Answer 24

Eosinophil

Question 25

Answer 25

Segmented neutrophils

Question 26

Answer 26

Monocytes
* Highly irregular nuclear shape, often being confused with neutrophils.
* Monocytes will have larger diameter than adjacent neutrophils and monocyte cytoplasm is darker blue-gray.
* The cytoplasm may have vacuoles.

Question 27

Answer 27

Feline basophil
The cytoplasm is typically consists of a pavement stone arrangement of faintly staining granules.

Question 28

Answer 28

Eosinophil

Question 29

Answer 29

Segmented neutrophil

Question 30

Answer 30

Canine eosinophil

Question 31

1

Answer 31

Nucleated red blood cells

Question 32

2

Answer 32

Polychromatophilic erythrocytes