Blood is the only connective tissue in the human body that transports all essential components such as oxygen, nutrients, proteins, electrolytes, glucose, hormones and even metabolic waste products. A healthy person will have about 5 to 5.5 liters (1.5 gallons) of blood in their body.
What is Lymphocytes?
Lymphocytes are a type of white blood cell found in the blood (or leukocytes). They help the organism fight infection. All vertebrates have these in their immune system.
Lymphocytes make up 20 to 40% of all white blood cells in adulthood. Detectable in the blood, they reside in the central nervous system, and in places such as the lymph nodes, spleen and lymph nodes, where the initial immune response is most likely.
What is Monocytes?
Leukocytes or white blood cells include monocytes. They are the most common form of leukocyte and can be differentiated into macrophages and conventional dendritic cells.
As a component of the innate immune system, monocytes play an important role in adaptive immunity in vertebrates. Depending on their receptor phenotype, there are at least three subclasses of monocytes in human blood.
Difference Between Monocytes and Lymphocytes
| Monocytes | Lymphocytes |
| Large and spherical-shaped cells. | The size varies while encountering an infectious agent. |
| Makeup 2-8% of circulating WBCs. | Makeup 20-30% of circulating WBCs. |
| The cytoplasm is cloudy, opaque and blue-grey in colour with fine lilac granules. | The cytoplasm is clear, transparent and sky blue in colour without granules. |
| Presence of Infrequent vacuoles. | Presence of frequent vacuoles. |
| The lifespan of circulating monocytes is about 24 hours. | Lymphocytes are long-lived cells which may live for months or years. |
| Destroy pathogens through phagocytosis. | Destroy pathogens by producing antibodies. |
| The nucleus of a monocyte is soft, spongy, and oval-shaped with a pale bluish violet colour stain. | The nucleus of a lymphocyte is dense, oval-shaped and stretched with a deep purplish-blue colour stain. |
| Dendritic cells and Macrophages are two types of Monocytes. | B lymphocytes (B cells) and T lymphocytes (T cells) are two types of lymphocytes. |
| Monocytes are the tools for Innate Immunity. | Lymphocytes are tools for Adaptive Immunity |
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