L1, L2, and L3
Lability
Larva currens
Larval habitat
Larval survey
Larvivorous fish
Lassa Fever
Latent period
Latent stage
Laticaudidae
Latrodectus
Leaf-crown
Leech
Legionnaires disease
Leishman-Donovan Bodies
Leptospirosis
Leucocyte
Life cycle
Light traps
Lionfish
Lion's mane
Lip
Little mauve stinger
Loa Loa
Louse
Lung flukes
Lyme Disease
Lymphadenopathy
Lymphogranuloma venereum
Lymphoma
Lyssa virus
Lytocarpus philippinus